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Marson NA, Gallio AE, Mandal SK, Laskowski RA, Raven EL. In silico prediction of heme binding in proteins. J Biol Chem 2024; 300:107250. [PMID: 38569935 PMCID: PMC11101860 DOI: 10.1016/j.jbc.2024.107250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 03/11/2024] [Accepted: 03/26/2024] [Indexed: 04/05/2024] Open
Abstract
The process of heme binding to a protein is prevalent in almost all forms of life to control many important biological properties, such as O2-binding, electron transfer, gas sensing or to build catalytic power. In these cases, heme typically binds tightly (irreversibly) to a protein in a discrete heme binding pocket, with one or two heme ligands provided most commonly to the heme iron by His, Cys or Tyr residues. Heme binding can also be used as a regulatory mechanism, for example in transcriptional regulation or ion channel control. When used as a regulator, heme binds more weakly, with different heme ligations and without the need for a discrete heme pocket. This makes the characterization of heme regulatory proteins difficult, and new approaches are needed to predict and understand the heme-protein interactions. We apply a modified version of the ProFunc bioinformatics tool to identify heme-binding sites in a test set of heme-dependent regulatory proteins taken from the Protein Data Bank and AlphaFold models. The potential heme binding sites identified can be easily visualized in PyMol and, if necessary, optimized with RosettaDOCK. We demonstrate that the methodology can be used to identify heme-binding sites in proteins, including in cases where there is no crystal structure available, but the methodology is more accurate when the quality of the structural information is high. The ProFunc tool, with the modification used in this work, is publicly available at https://www.ebi.ac.uk/thornton-srv/databases/profunc and can be readily adopted for the examination of new heme binding targets.
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Affiliation(s)
- Noa A Marson
- School of Chemistry, University of Bristol, Bristol, UK
| | | | | | - Roman A Laskowski
- European Bioinformatics Institute (EMBL-EBI), European Molecular Biology Laboratory, Wellcome Trust Genome Campus, Cambridge, UK
| | - Emma L Raven
- School of Chemistry, University of Bristol, Bristol, UK.
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2
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Freindorf M, Antonio JJ, Kraka E. Iron-histidine bonding in bishistidyl hemoproteins-A local vibrational mode study. J Comput Chem 2024; 45:574-588. [PMID: 38041830 DOI: 10.1002/jcc.27267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 11/09/2023] [Accepted: 11/11/2023] [Indexed: 12/04/2023]
Abstract
We investigated the intrinsic strength of distal and proximal FeN bonds for both ferric and ferrous oxidation states of bishistidyl hemoproteins from bacteria, animals, human, and plants, including two cytoglobins, ten hemoglobins, two myoglobins, six neuroglobins, and six phytoglobins. As a qualified measure of bond strength, we used local vibrational force constants ka (FeN) based on local mode theory developed in our group. All calculations were performed with a hybrid QM/MM ansatz. Starting geometries were taken from available x-ray structures. ka (FeN) values were correlated with FeN bond lengths and covalent bond character. We also investigated the stiffness of the axial NFeN bond angle. Our results highlight that protein effects are sensitively reflected in ka (FeN), allowing one to compare trends in diverse protein groups. Moreover, ka (NFeN) is a perfect tool to monitor changes in the axial heme framework caused by different protein environments as well as different Fe oxidation states.
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Affiliation(s)
- Marek Freindorf
- Chemistry Department, Southern Methodist University, Dallas, Texas, USA
| | - Juliana J Antonio
- Chemistry Department, Southern Methodist University, Dallas, Texas, USA
| | - Elfi Kraka
- Chemistry Department, Southern Methodist University, Dallas, Texas, USA
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3
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Rodriguez‐Abetxuko A, Reifs A, Sánchez‐deAlcázar D, Beloqui A. A Versatile Chemoenzymatic Nanoreactor that Mimics NAD(P)H Oxidase for the In Situ Regeneration of Cofactors. Angew Chem Int Ed Engl 2022; 61:e202206926. [PMID: 35762738 PMCID: PMC9796410 DOI: 10.1002/anie.202206926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Indexed: 01/01/2023]
Abstract
Herein, we report a multifunctional chemoenzymatic nanoreactor (NanoNOx) for the glucose-controlled regeneration of natural and artificial nicotinamide cofactors. NanoNOx are built of glucose oxidase-polymer hybrids that assemble in the presence of an organometallic catalyst: hemin. The design of the hybrid is optimized to increase the effectiveness and the directional channeling at low substrate concentration. Importantly, NanoNOx can be reutilized without affecting the catalytic properties, can show high stability in the presence of organic solvents, and can effectively oxidize assorted natural and artificial enzyme cofactors. Finally, the hybrid was successfully coupled with NADH-dependent dehydrogenases in one-pot reactions, using a strategy based on the sequential injection of a fuel, namely, glucose. Hence, this study describes the first example of a hybrid chemoenzymatic nanomaterial able to efficiently mimic NOx enzymes in cooperative one-pot cascade reactions.
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Affiliation(s)
- Andoni Rodriguez‐Abetxuko
- CIC nanoGUNE, Basque Research and Technology Alliance (BRTA)Tolosa Hiribidea 7620018Donostia-San SebastiánSpain
| | - Antonio Reifs
- CIC nanoGUNE, Basque Research and Technology Alliance (BRTA)Tolosa Hiribidea 7620018Donostia-San SebastiánSpain
| | - Daniel Sánchez‐deAlcázar
- POLYMAT and Department of Applied ChemistryUniversity of the Basque Country UPV/EHUPaseo Manuel Lardizabal 320018Donostia-San SebastiánSpain
| | - Ana Beloqui
- POLYMAT and Department of Applied ChemistryUniversity of the Basque Country UPV/EHUPaseo Manuel Lardizabal 320018Donostia-San SebastiánSpain,IKERBASQUEPlaza Euskadi 548009BilbaoSpain
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4
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Rodriguez-Abetxuko A, Reifs A, Sánchez-deAlcázar D, Beloqui A. A Versatile Chemoenzymatic Nanoreactor that Mimics NAD(P)H Oxidase for the In Situ Regeneration of Cofactors. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202206926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | | | - Ana Beloqui
- University of the Basque Country: Universidad del Pais Vasco POLYMAT Tolosa, 76 SPAIN
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5
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SAXS Reveals the Stabilization Effects of Modified Sugars on Model Proteins. Life (Basel) 2022; 12:life12010123. [PMID: 35054516 PMCID: PMC8778440 DOI: 10.3390/life12010123] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 12/31/2021] [Accepted: 01/13/2022] [Indexed: 12/03/2022] Open
Abstract
Many proteins are usually not stable under different stresses, such as temperature and pH variations, mechanical stresses, high concentrations, and high saline contents, and their transport is always difficult, because they need to be maintained in a cold regime, which is costly and very challenging to achieve in remote areas of the world. For this reason, it is extremely important to find stabilizing agents that are able to preserve and protect proteins against denaturation. In the present work, we investigate, by extensively using synchrotron small-angle X-ray scattering experiments, the stabilization effect of five different sugar-derived compounds developed at ExtremoChem on two model proteins: myoglobin and insulin. The data analysis, based on a novel method that combines structural and thermodynamic features, has provided details about the physical-chemical processes that regulate the stability of these proteins in the presence of stabilizing compounds. The results clearly show that some modified sugars exert a greater stabilizing effect than others, being able to maintain the active forms of proteins at temperatures higher than those in which proteins, in the absence of stabilizers, reach denatured states.
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6
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Zhang Y, Tian X, Jiao Y, Liu Q, Li R, Wang W. An out of box thinking: the changes of iron-porphyrin during meat processing and gastrointestinal tract and some methods for reducing its potential health hazard. Crit Rev Food Sci Nutr 2021; 63:1390-1405. [PMID: 34387535 DOI: 10.1080/10408398.2021.1963946] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Iron-porphyrin is a very important substance in organisms, especially in animals. It is not only the source of iron in human body, but is also the catalytic center of many reactions. Previous studies suggested that adequate intake of iron was important for the health of human, especially for children and pregnant women. However, associated diseases caused by iron over-intake and excessive meat consumption suggested its potential harmfulness for human health. During meat processing, Iron-porphyrin will cause the oxidation of proteins and fatty acids. In the gastrointestinal tract, iron-porphyrin can induce the production of malondialdehyde, fats oxidation, and indirectly cause oxidation of amino acids and nitrates etc. Iron-porphyrin enters the intestinal tract and disturbs the balance of intestinal flora. Finally, some common measures for inhibiting its activity are introduced, including the use of chelating agent, antioxidants, competitive inhibitor, etc., as well as give the hypothesis that sodium chloride increases the catalytic activity of iron-porphyrin. The purpose of this review is to present an overview of current knowledge about the changes of iron-porphyrin in the whole technico- and gastrointesto- processing axis and to provide ideas for further research in meat nutrition.
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Affiliation(s)
- Yafei Zhang
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, China
| | - Xiaojing Tian
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, China
| | - Yuzhen Jiao
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, China
| | - Qiubo Liu
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, China
| | - Ruonan Li
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, China
| | - Wenhang Wang
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin, China
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Lim KS, Cheng J, Putz A, Dong Q, Bai X, Beiki H, Tuggle CK, Dyck MK, Canada PG, Fortin F, Harding JCS, Plastow GS, Dekkers JCM. Quantitative analysis of the blood transcriptome of young healthy pigs and its relationship with subsequent disease resilience. BMC Genomics 2021; 22:614. [PMID: 34384354 PMCID: PMC8361860 DOI: 10.1186/s12864-021-07912-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 07/26/2021] [Indexed: 12/13/2022] Open
Abstract
Background Disease resilience, which is the ability of an animal to maintain performance under disease, is important for pigs in commercial herds, where they are exposed to various pathogens. Our objective was to investigate population-level gene expression profiles in the blood of 912 healthy F1 barrows at ~ 27 days of age for associations with performance and health before and after their exposure to a natural polymicrobial disease challenge at ~ 43 days of age. Results Most significant (q < 0.20) associations of the level of expression of individual genes in blood of young healthy pigs were identified for concurrent growth rate and subjective health scores prior to the challenge, and for mortality, a combined mortality-treatment trait, and feed conversion rate after the challenge. Gene set enrichment analyses revealed three groups of gene ontology biological process terms that were related to disease resilience: 1) immune and stress response-related terms were enriched among genes whose increased expression was unfavorably associated with both pre- and post-challenge traits, 2) heme-related terms were enriched among genes that had favorable associations with both pre- and post-challenge traits, and 3) terms related to protein localization and viral gene expression were enriched among genes that were associated with reduced performance and health traits after but not before the challenge. Conclusions Gene expression profiles in blood from young healthy piglets provide insight into their performance when exposed to disease and other stressors. The expression of genes involved in stress response, heme metabolism, and baseline expression of host genes related to virus propagation were found to be associated with host response to disease. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-021-07912-8.
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Affiliation(s)
- Kyu-Sang Lim
- Department of Animal Science, Iowa State University, Ames, Iowa, 50011, USA
| | - Jian Cheng
- Department of Animal Science, Iowa State University, Ames, Iowa, 50011, USA
| | - Austin Putz
- Department of Animal Science, Iowa State University, Ames, Iowa, 50011, USA.,Swine Business Unit, Hendrix Genetics, Boxmeer, 5831, CK, The Netherlands
| | - Qian Dong
- Department of Animal Science, Iowa State University, Ames, Iowa, 50011, USA.,Department of Epidemiology and Cancer Control, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Xuechun Bai
- Department of Agriculture, Food and Nutritional Science, University of Alberta, Edmonton, AB, T6G 2R3, Canada
| | - Hamid Beiki
- Department of Animal Science, Iowa State University, Ames, Iowa, 50011, USA
| | | | - Michael K Dyck
- Department of Agriculture, Food and Nutritional Science, University of Alberta, Edmonton, AB, T6G 2R3, Canada
| | - Pig Gen Canada
- PigGen Canada Research Consortium, Guelph, Ontario, N1H4G8, Canada
| | - Frederic Fortin
- Centre de Développement du Porc du Québec Inc. (CDPQ), Québec City, QC, G1V 4M6, Canada
| | - John C S Harding
- Department of Large Animal Clinical Sciences, University of Saskatchewan, Saskatoon, SK, S7N 5A2, Canada
| | - Graham S Plastow
- Department of Agriculture, Food and Nutritional Science, University of Alberta, Edmonton, AB, T6G 2R3, Canada
| | - Jack C M Dekkers
- Department of Animal Science, Iowa State University, Ames, Iowa, 50011, USA.
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8
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Lin YW. Biodegradation of aromatic pollutants by metalloenzymes: A structural-functional-environmental perspective. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.213774] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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9
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Kaur P, Tyagi V. Recent Advances in Iron‐Catalyzed Chemical and Enzymatic Carbene‐Transfer Reactions. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001158] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Parmjeet Kaur
- School of Chemistry and Biochemistry Thapar Institute of Engineering and Technology Patiala 147004 Punjab India
| | - Vikas Tyagi
- School of Chemistry and Biochemistry Thapar Institute of Engineering and Technology Patiala 147004 Punjab India
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10
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Sosna M, Leiva‐Eriksson N, Bülow L, Ferapontova EE. Electrochemical Characterization and Bioelectrocatalytic H2O2Sensing of Non‐Symbiotic Hexa‐Coordinated Sugar Beet Hemoglobins. ChemElectroChem 2020. [DOI: 10.1002/celc.202000358] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Maciej Sosna
- Interdisciplinary Nanoscience Center (iNANO) Science and TechnologyAarhus University Gustav Wieds Vej 1590-14 8000 Aarhus C Denmark
| | | | - Leif Bülow
- Lund University P.O. Box 124 221 00 Lund Sweden
| | - Elena E. Ferapontova
- Interdisciplinary Nanoscience Center (iNANO) Science and TechnologyAarhus University Gustav Wieds Vej 1590-14 8000 Aarhus C Denmark
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11
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Li YW, Chi Q, Feng T, Xiao H, Li L, Wang X. Interactions of indole alkaloids with myoglobin: A mass spectrometry based spectrometric and computational method. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2020; 34:e8656. [PMID: 31721336 DOI: 10.1002/rcm.8656] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 11/07/2019] [Accepted: 11/08/2019] [Indexed: 06/10/2023]
Abstract
RATIONALE Interactions of drug molecules and proteins play important roles in physiological and pathological processes in vivo. It is of significance to establish a reliable strategy for studying protein-drug ligand interactions and would be helpful for the design and screening of new drugs in pharmacological research. METHODS The interactions between four indole alkaloids (IAs) extracted from Ophiorrhiza japonica (O. japonica) and myoglobin (Mb) protein were investigated using a multi-spectrometric and computational method of native electrospray ionization mass spectrometry (native ESI-MS), hydrogen/deuterium exchange mass spectrometry (HDX-MS), circular dichroism (CD) and molecular docking (MD). RESULTS The IA-bound Mb complexes were analyzed using native ESI-MS, with the obtained protein-to-ligand stoichiometry at 1:1, 1:2 and 1:3. Binding constants were measured according to the interpretation of MS spectra. MD complemented MS measurements, probing the binding sites and modes of the four IAs to Mb. Analyses involving CD and HDX-MS demonstrated that exposure to IAs could affect the conformation of Mb by decreasing the α-helix content and made Mb more susceptible to HDX at the backbone. CONCLUSIONS A new MS-based integrated analysis method has been developed to successfully study the interactions of Mb and IAs extracted from O. japonica. The experimental and calculation results have good consistency, revealing all of the four IA molecules could bind to Mb to form 1:1, 1:2 and 1:3 Mb-IA complexes. The order of binding ability of these IAs to Mb was ophiorrhine B > compound C > ophiorrhine A > compound D. CD and HDX-MS results indicated that binding with IAs destabilizes Mb. HDX-MS analysis suggests that Mb becomes more susceptible to HDX, indicating that binding with IAs destabilizes the structure of Mb. In addition, the interaction with IAs affected the overall structure of Mb, ascribed to the decrease of α-helix content and less folding of the backbone.
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Affiliation(s)
- Ya-Wen Li
- College of Chemistry and Materials Science, South-Central University for Nationalities, 430074, Wuhan, China
| | - Quan Chi
- College of Chemistry and Materials Science, South-Central University for Nationalities, 430074, Wuhan, China
| | - Tao Feng
- School of Pharmaceutical Sciences, South-Central University for Nationalities, 430074, Wuhan, China
| | - Huaming Xiao
- College of Chemistry and Materials Science, South-Central University for Nationalities, 430074, Wuhan, China
| | - Linghe Li
- College of Chemistry and Materials Science, South-Central University for Nationalities, 430074, Wuhan, China
| | - Xian Wang
- College of Chemistry and Materials Science, South-Central University for Nationalities, 430074, Wuhan, China
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12
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Lin YW. Uranyl Binding to Proteins and Structural-Functional Impacts. Biomolecules 2020; 10:biom10030457. [PMID: 32187982 PMCID: PMC7175365 DOI: 10.3390/biom10030457] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 03/08/2020] [Accepted: 03/13/2020] [Indexed: 01/29/2023] Open
Abstract
The widespread use of uranium for civilian purposes causes a worldwide concern of its threat to human health due to the long-lived radioactivity of uranium and the high toxicity of uranyl ion (UO22+). Although uranyl–protein/DNA interactions have been known for decades, fewer advances are made in understanding their structural-functional impacts. Instead of focusing only on the structural information, this article aims to review the recent advances in understanding the binding of uranyl to proteins in either potential, native, or artificial metal-binding sites, and the structural-functional impacts of uranyl–protein interactions, such as inducing conformational changes and disrupting protein-protein/DNA/ligand interactions. Photo-induced protein/DNA cleavages, as well as other impacts, are also highlighted. These advances shed light on the structure-function relationship of proteins, especially for metalloproteins, as impacted by uranyl–protein interactions. It is desired to seek approaches for biological remediation of uranyl ions, and ultimately make a full use of the double-edged sword of uranium.
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Affiliation(s)
- Ying-Wu Lin
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China; ; Tel.: +86-734-8578079
- Laboratory of Protein Structure and Function, University of South China, Hengyang 421001, China
- Hunan Key Laboratory for the Design and Application of Actinide Complexes, University of South China, Hengyang 421001, China
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13
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Lesjak M, K S Srai S. Role of Dietary Flavonoids in Iron Homeostasis. Pharmaceuticals (Basel) 2019; 12:E119. [PMID: 31398897 PMCID: PMC6789581 DOI: 10.3390/ph12030119] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Revised: 07/29/2019] [Accepted: 08/05/2019] [Indexed: 01/14/2023] Open
Abstract
Balancing systemic iron levels within narrow limits is critical for human health, as both iron deficiency and overload lead to serious disorders. There are no known physiologically controlled pathways to eliminate iron from the body and therefore iron homeostasis is maintained by modifying dietary iron absorption. Several dietary factors, such as flavonoids, are known to greatly affect iron absorption. Recent evidence suggests that flavonoids can affect iron status by regulating expression and activity of proteins involved the systemic regulation of iron metabolism and iron absorption. We provide an overview of the links between different dietary flavonoids and iron homeostasis together with the mechanism of flavonoids effect on iron metabolism. In addition, we also discuss the clinical relevance of state-of-the-art knowledge regarding therapeutic potential that flavonoids may have for conditions that are low in iron such as anaemia or iron overload diseases.
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Affiliation(s)
- Marija Lesjak
- Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia.
| | - Surjit K S Srai
- Research Department of Structural and Molecular Biology, Division of Biosciences, University College London, Darwin Building, Gower Street, London WC1E 6BT, UK.
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14
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Lee JH, Kim HR, Lee JH, Lee SK, Chun Y, Han SO, Yoo HY, Park C, Kim SW. Enhanced In-Vitro Hemozoin Polymerization by Optimized Process using Histidine-Rich Protein II (HRPII). Polymers (Basel) 2019; 11:E1162. [PMID: 31288462 PMCID: PMC6680884 DOI: 10.3390/polym11071162] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 07/03/2019] [Accepted: 07/06/2019] [Indexed: 01/27/2023] Open
Abstract
Conductive biopolymers, an important class of functional materials, have received attention in various fields because of their unique electrical, optical, and physical properties. In this study, the polymerization of heme into hemozoin was carried out in an in vitro system by the newly developed heme polymerase (histidine-rich protein 2 (HRP-II)). The HRP-II was produced by recombinant E. coli BL21 from the Plasmodium falciparum gene. To improve the hemozoin production, the reaction conditions on the polymerization were investigated and the maximum production was achieved after about 790 μM at 34 °C with 200 rpm for 24 h. As a result, the production was improved about two-fold according to the stepwise optimization in an in vitro system. The produced hemozoin was qualitatively analyzed using the Fourier transform infrared (FTIR) spectroscopy, energy dispersive X-ray spectroscopy (EDS), and scanning electron microscopy (SEM). Finally, it was confirmed that the enzymatically polymerized hemozoin had similar physical properties to chemically synthesized hemozoin. These results could represent a significant potential for nano-biotechnology applications, and also provide guidance in research related to hemozoin utilization.
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Affiliation(s)
- Ju Hun Lee
- Department of Chemical and Biological Engineering, Korea University, 145, Anam-Ro, Seongbuk-Gu, Seoul 02841, Korea
| | - Hyeong Ryeol Kim
- Department of Chemical and Biological Engineering, Korea University, 145, Anam-Ro, Seongbuk-Gu, Seoul 02841, Korea
| | - Ja Hyun Lee
- Department of Chemical and Biological Engineering, Korea University, 145, Anam-Ro, Seongbuk-Gu, Seoul 02841, Korea
- Department of Food Science and Engineering, Dongyang Mirae University, 445, Gyeongin-ro, Guro-gu, Seoul 08221, Korea
| | - Soo Kweon Lee
- Department of Chemical and Biological Engineering, Korea University, 145, Anam-Ro, Seongbuk-Gu, Seoul 02841, Korea
| | - Youngsang Chun
- Department of Interdisciplinary Bio-Micro System Technology, College of Engineering, Korea University, 145 Anam-ro 5, Seongbuk-gu, Seoul 02841, Korea
| | - Sung Ok Han
- Department of Biotechnology, Korea University, 145, Anam-Ro, Seongbuk-Gu, Seoul 02841, Korea
| | - Hah Young Yoo
- Department of Biotechnology, Sangmyung University, 20, Hongjimun 2-Gil, Jongno-Gu, Seoul 03016, Korea.
| | - Chulhwan Park
- Department of Chemical Engineering, Kwangwoon University, 20, Kwangwoon-Ro, Nowon-Gu, Seoul 01897, Korea.
| | - Seung Wook Kim
- Department of Chemical and Biological Engineering, Korea University, 145, Anam-Ro, Seongbuk-Gu, Seoul 02841, Korea.
- Department of Chemistry, Faculty of Science and Technology, Universitas Airlangga, Surabaya 60115, Indonesia.
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15
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Lin Y. Rational design of heme enzymes for biodegradation of pollutants toward a green future. Biotechnol Appl Biochem 2019; 67:484-494. [DOI: 10.1002/bab.1788] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 06/06/2019] [Indexed: 12/28/2022]
Affiliation(s)
- Ying‐Wu Lin
- School of Chemistry and Chemical Engineering University of South China Hengyang People's Republic of China
- Laboratory of Protein Structure and Function University of South China Hengyang People's Republic of China
- Hunan Key Laboratory for the Design and Application of Actinide Complexes University of South China Hengyang People's Republic of China
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16
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Samhan-Arias AK, Cordas CM, Carepo MS, Maia LB, Gutierrez-Merino C, Moura I, Moura JJG. Ligand accessibility to heme cytochrome b 5 coordinating sphere and enzymatic activity enhancement upon tyrosine ionization. J Biol Inorg Chem 2019; 24:317-330. [PMID: 30838452 DOI: 10.1007/s00775-019-01649-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2018] [Accepted: 02/21/2019] [Indexed: 01/21/2023]
Abstract
Recently, we observed that at extreme alkaline pH, cytochrome b5 (Cb5) acquires a peroxidase-like activity upon formation of a low spin hemichrome associated with a non-native state. A functional characterization of Cb5, in a wide pH range, shows that oxygenase/peroxidase activities are stimulated in alkaline media, and a correlation between tyrosine ionization and the attained enzymatic activities was noticed, associated with an altered heme spin state, when compared to acidic pH values at which the heme group is released. In these conditions, a competitive assay between imidazole binding and Cb5 endogenous heme ligands revealed the appearance of a binding site for this exogenous ligand that promotes a heme group exposure to the solvent upon ligation. Our results shed light on the mechanism behind Cb5 oxygenase/peroxidase activity stimulation in alkaline media and reveal a role of tyrosinate anion enhancing Cb5 enzymatic activities on the distorted protein before maximum protein unfolding.
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Affiliation(s)
- Alejandro K Samhan-Arias
- LAQV, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516, Lisbon, Portugal.
| | - Cristina M Cordas
- LAQV, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516, Lisbon, Portugal
| | - Marta S Carepo
- LAQV, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516, Lisbon, Portugal
| | - Luisa B Maia
- LAQV, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516, Lisbon, Portugal
| | - Carlos Gutierrez-Merino
- Department of Biochemistry and Molecular Biology, Faculty of Sciences and Institute of Molecular Pathology Biomarkers, University of Extremadura, 06006, Badajoz, Spain
| | - Isabel Moura
- LAQV, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516, Lisbon, Portugal
| | - José J G Moura
- LAQV, REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516, Lisbon, Portugal.
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17
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Benson KR, Gorecki J, Nikiforov A, Tsui W, Kasi RM, Kumar CV. Cytochrome c–poly(acrylic acid) conjugates with improved peroxidase turnover number. Org Biomol Chem 2019; 17:4043-4048. [DOI: 10.1039/c9ob00541b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cytochrome c–poly(acrylic acid) conjugates with 34-fold enhanced peroxidase activity due to acidification of enzyme microenvironment and suppression of wasteful intermediates.
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Affiliation(s)
- K. R. Benson
- Department of Chemistry
- University of Connecticut
- Storrs
- USA
| | - J. Gorecki
- Department of Chemistry
- University of Connecticut
- Storrs
- USA
| | - A. Nikiforov
- Department of Chemistry
- University of Connecticut
- Storrs
- USA
| | - W. Tsui
- Department of Chemistry
- University of Connecticut
- Storrs
- USA
| | - R. M. Kasi
- Department of Chemistry
- University of Connecticut
- Storrs
- USA
- Institute of Materials Science
| | - C. V. Kumar
- Department of Chemistry
- University of Connecticut
- Storrs
- USA
- Institute of Materials Science
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18
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Liu HX, Li L, He B, Gao SQ, Wen GB, Lin YW. Neuroglobin is capable of self-oxidation of methionine64 introduced at the heme axial position. Dalton Trans 2018; 47:10847-10852. [PMID: 30027178 DOI: 10.1039/c8dt02397b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Neuroglobin (Ngb), with its physiological role not fully understood, was found to be capable of self-oxidation of methionine64 introduced at the heme axial position (H64M Ngb), adopting a high-spin heme state and producing both methionine sulfoxide (SO-Met) and sulfone (SO2-Met), which represents the structure and function of cytochrome c in a non-native state.
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Affiliation(s)
- Hai-Xiao Liu
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China.
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19
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Szudzik M, Starzyński RR, Jończy A, Mazgaj R, Lenartowicz M, Lipiński P. Iron Supplementation in Suckling Piglets: An Ostensibly Easy Therapy of Neonatal Iron Deficiency Anemia. Pharmaceuticals (Basel) 2018; 11:E128. [PMID: 30467279 PMCID: PMC6315738 DOI: 10.3390/ph11040128] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 11/07/2018] [Accepted: 11/19/2018] [Indexed: 11/17/2022] Open
Abstract
In pigs, iron deficiency anemia (IDA) is the most prevalent deficiency disorder during the early postnatal period, frequently developing into a serious illness. On the other hand, in humans, only low-birth-weight infants, including premature infants, are especially susceptible to developing IDA. In both human and pig neonates, the initial cause of IDA is low birth iron stores. In piglets this shortage of stored iron results mainly from genetic selection over the past few decades for large litter sizes and high birth weights. As a consequence, pregnant sows cannot provide a sufficient amount of iron to the increasing number of developing fetuses. Supplementation with iron is a common practice for the treatment of IDA in piglets. For decades, the preferred procedure for delivering iron supplements during early life stages has been through the intramuscular injection of a large amount of iron dextran. However, this relatively simple therapy, which in general, efficiently corrects IDA, may generate toxic effects, and by inducing hepcidin expression, may decrease bioavailability of supplemental iron. New iron supplements are considered herein with the aim to combine the improvement of hematological status, blunting of hepcidin expression, and minimizing the toxicity of the administered iron. We propose that iron-deficient piglets constitute a convenient animal model for performing pre-clinical studies with iron supplements.
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Affiliation(s)
- Mateusz Szudzik
- Department of Molecular Biology, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzębiec, 05-552 Magdalenka, Poland.
| | - Rafał R Starzyński
- Department of Molecular Biology, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzębiec, 05-552 Magdalenka, Poland.
| | - Aneta Jończy
- Department of Molecular Biology, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzębiec, 05-552 Magdalenka, Poland.
| | - Rafał Mazgaj
- Department of Molecular Biology, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzębiec, 05-552 Magdalenka, Poland.
| | - Małgorzata Lenartowicz
- Department of Genetics and Evolution, Institute of Zoology, Jagiellonian University, Gronostajowa 9, 30-387 Kraków, Poland.
| | - Paweł Lipiński
- Department of Molecular Biology, Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzębiec, 05-552 Magdalenka, Poland.
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, Wołyńska 33, 60-637 Poznań, Poland.
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20
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Lechuga GC, Pereira MCS, Bourguignon SC. Heme metabolism as a therapeutic target against protozoan parasites. J Drug Target 2018; 27:767-779. [DOI: 10.1080/1061186x.2018.1536982] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Guilherme Curty Lechuga
- Laboratório de Interação celular e molecular, Departamento de Biologia Celular e Molecular, Universidade Federal Fluminense, Rua Outeiro São João Batista, Rio de Janeiro, Brazil
- Fundação Oswaldo Cruz, Laboratório de Ultraestrutura Celular, Rio de Janeiro, Brazil
- Instituto de Biologia, Programa de Pós-graduação em Ciências e Biotecnologia (PPBI), Universidade Federal Fluminense, Rio de Janeiro, Brazil
| | - Mirian C. S. Pereira
- Fundação Oswaldo Cruz, Laboratório de Ultraestrutura Celular, Rio de Janeiro, Brazil
| | - Saulo C. Bourguignon
- Laboratório de Interação celular e molecular, Departamento de Biologia Celular e Molecular, Universidade Federal Fluminense, Rua Outeiro São João Batista, Rio de Janeiro, Brazil
- Instituto de Biologia, Programa de Pós-graduação em Ciências e Biotecnologia (PPBI), Universidade Federal Fluminense, Rio de Janeiro, Brazil
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21
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Lin YW. Structure and function of heme proteins regulated by diverse post-translational modifications. Arch Biochem Biophys 2018; 641:1-30. [DOI: 10.1016/j.abb.2018.01.009] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 01/10/2018] [Accepted: 01/13/2018] [Indexed: 01/08/2023]
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22
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Cheng HM, Yuan H, Wang XJ, Xu JK, Gao SQ, Wen GB, Tan X, Lin YW. Formation of Cys-heme cross-link in K42C myoglobin under reductive conditions with molecular oxygen. J Inorg Biochem 2018; 182:141-149. [PMID: 29477977 DOI: 10.1016/j.jinorgbio.2018.02.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Revised: 02/04/2018] [Accepted: 02/13/2018] [Indexed: 12/13/2022]
Abstract
The structure and function of heme proteins are regulated by diverse post-translational modifications including heme-protein cross-links, with the underlying mechanisms not well understood. In this study, we introduced a Cys (K42C) close to the heme 4-vinyl group in sperm whale myoglobin (Mb) and solved its X-ray crystal structure. Interestingly, we found that K42C Mb can partially form a Cys-heme cross-link (termed K42C Mb-X) under dithiothreitol-induced reductive conditions in presence of O2, as suggested by guanidine hydrochloride-induced unfolding and heme extraction studies. Mass spectrometry (MS) studies, together with trypsin digestion studies, further indicated that a thioether bond is formed between Cys42 and the heme 4-vinyl group with an additional mass of 16 Da, likely due to hydroxylation of the α‑carbon. We then proposed a plausible mechanism for the formation of the novel Cys-heme cross-link based on MS, kinetic UV-vis and electron paramagnetic resonance (EPR) studies. Moreover, the Cys-heme cross-link was shown to fine-tune the protein reactivity toward activation of H2O2. This study provides valuable insights into the post-translational modification of heme proteins, and also suggests that the Cys-heme cross-link can be induced to form in vitro, making it useful for design of new heme proteins with a non-dissociable heme and improved functions.
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Affiliation(s)
- Hui-Min Cheng
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Hong Yuan
- Department of Chemistry, Shanghai Key Lab of Chemical Biology for Protein Research & Institute of Biomedical Science, Fudan University, Shanghai 200433, China
| | - Xiao-Juan Wang
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Jia-Kun Xu
- Yellow Sea Fisheries Research Institute, Qingdao 266071, China
| | - Shu-Qin Gao
- Lab of Protein Structure and Function, University of South China, Hengyang 421001, China
| | - Ge-Bo Wen
- Lab of Protein Structure and Function, University of South China, Hengyang 421001, China
| | - Xiangshi Tan
- Department of Chemistry, Shanghai Key Lab of Chemical Biology for Protein Research & Institute of Biomedical Science, Fudan University, Shanghai 200433, China
| | - Ying-Wu Lin
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China; Lab of Protein Structure and Function, University of South China, Hengyang 421001, China.
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23
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Samhan-Arias AK, Maia LB, Cordas CM, Moura I, Gutierrez-Merino C, Moura JJG. Peroxidase-like activity of cytochrome b 5 is triggered upon hemichrome formation in alkaline pH. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2017; 1866:373-378. [PMID: 28958890 DOI: 10.1016/j.bbapap.2017.09.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Revised: 09/19/2017] [Accepted: 09/20/2017] [Indexed: 10/18/2022]
Abstract
In alkaline media (pH12) a catalytic peroxidase activity of cytochrome b5 was found associated to a different conformational state. Upon incubation at this pH, cytochrome b5 electronic absorption spectrum was altered, with disappearance of characteristic bands of cytochrome b5 at pH7.0. The appearance of new electronic absorption bands and EPR measurements support the formation of a cytochrome b5 class B hemichrome with an acquired ability to bind polar ligands. This hemichrome is characterized by a negative formal redox potential and the same folding properties than cytochrome b5 at pH7. The acquired peroxidase-like activity of cytochrome b5 found at pH12, driven by a hemichrome formation, suggests a role of this protein in peroxidation products propagation.
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Affiliation(s)
- Alejandro K Samhan-Arias
- UCIBIO, REQUIMTE, Departamento de Quimica, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.
| | - Luisa B Maia
- UCIBIO, REQUIMTE, Departamento de Quimica, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Cristina M Cordas
- UCIBIO, REQUIMTE, Departamento de Quimica, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Isabel Moura
- UCIBIO, REQUIMTE, Departamento de Quimica, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Carlos Gutierrez-Merino
- Department of Biochemistry and Molecular Biology, Faculty of Sciences, University of Extremadura, 06006, Badajoz, Spain
| | - José J G Moura
- UCIBIO, REQUIMTE, Departamento de Quimica, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.
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24
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Dietary hemoglobin rescues young piglets from severe iron deficiency anemia: Duodenal expression profile of genes involved in heme iron absorption. PLoS One 2017; 12:e0181117. [PMID: 28704474 PMCID: PMC5514692 DOI: 10.1371/journal.pone.0181117] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 06/25/2017] [Indexed: 12/22/2022] Open
Abstract
Heme is an efficient source of iron in the diet, and heme preparations are used to prevent and cure iron deficiency anemia in humans and animals. However, the molecular mechanisms responsible for heme absorption remain only partially characterized. Here, we employed young iron-deficient piglets as a convenient animal model to determine the efficacy of oral heme iron supplementation and investigate the pathways of heme iron absorption. The use of bovine hemoglobin as a dietary source of heme iron was found to efficiently counteract the development of iron deficiency anemia in piglets, although it did not fully rebalance their iron status. Our results revealed a concerted increase in the expression of genes responsible for apical and basolateral heme transport in the duodenum of piglets fed a heme-enriched diet. In these animals the catalytic activity of heme oxygenase 1 contributed to the release of elemental iron from the protoporphyrin ring of heme within enterocytes, which may then be transported by the strongly expressed ferroportin across the basolateral membrane to the circulation. We hypothesize that the well-recognized high bioavailability of heme iron may depend on a split pathway mediating the transport of heme-derived elemental iron and intact heme from the interior of duodenal enterocytes to the bloodstream.
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25
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Hu S, He B, Du KJ, Wang XJ, Gao SQ, Lin YW. Peroxidase Activity of a c-Type Cytochrome b5 in the Non-Native State is Comparable to that of Native Peroxidases. ChemistryOpen 2017. [PMID: 28638761 PMCID: PMC5474653 DOI: 10.1002/open.201700055] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The design of artificial metalloenzymes has achieved tremendous progress, although few designs can achieve catalytic performances comparable to that of native enzymes. Moreover, the structure and function of artificial metalloenzymes in non‐native states has rarely been explored. Herein, we found that a c‐type cytochrome b5 (Cyt b5), N57C/S71C Cyt b5, with heme covalently attached to the protein matrix through two Cys–heme linkages, adopts a non‐native state with an open heme site after guanidine hydrochloride (Gdn⋅HCl)‐induced unfolding, which facilitates H2O2 activation and substrate binding. Stopped‐flow kinetic studies further revealed that c‐type Cyt b5 in the non‐native state exhibited impressive peroxidase activity comparable to that of native peroxidases, such as the most efficient horseradish peroxidase. This study presents an alternative approach to the design of functional artificial metalloenzymes by exploring enzymatic functions in non‐native states.
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Affiliation(s)
- Shan Hu
- School of Chemistry and Chemical Engineering University of South China Hengyang 421001 P.R. China
| | - Bo He
- School of Chemistry and Chemical Engineering University of South China Hengyang 421001 P.R. China
| | - Ke-Jie Du
- School of Chemistry and Chemical Engineering University of South China Hengyang 421001 P.R. China
| | - Xiao-Juan Wang
- School of Chemistry and Chemical Engineering University of South China Hengyang 421001 P.R. China
| | - Shu-Qin Gao
- Laboratory of Protein Structure and Function University of South China Hengyang 421001 P.R. China
| | - Ying-Wu Lin
- School of Chemistry and Chemical Engineering University of South China Hengyang 421001 P.R. China.,Laboratory of Protein Structure and Function University of South China Hengyang 421001 P.R. China
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26
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Hu S, He B, Wang XJ, Gao SQ, Wen GB, Lin YW. Stabilization of cytochrome b 5 by a conserved tyrosine in the secondary sphere of heme active site: A spectroscopic and computational study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 174:118-123. [PMID: 27888781 DOI: 10.1016/j.saa.2016.11.032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2016] [Revised: 11/14/2016] [Accepted: 11/16/2016] [Indexed: 06/06/2023]
Abstract
Heme proteins perform a large array of biological functions, with the heme group bound non-covalently or covalently. To probe the stabilization role of conserved tyrosine residue in the secondary sphere of heme site in heme proteins, we herein used cytochrome b5 (Cyt b5) as a model protein, and mutated Tyr30 to Phe or His by removal of Tyr30 associated H-bond network and hydrophobic interaction. We performed thermal-induced unfolding studies for the two mutants, Y30F Cyt b5 and Y30H Cyt b5, as monitored by both UV-Vis and CD spectroscopy, as well as heme transfer studies from these proteins to apo-myoglobin, with wild-type Cyt b5 under the same conditions for comparison. The reduced stability of both mutants indicates that both the H-bonding and hydrophobic interactions associated with Tyr30 contribute to the protein stability. Moreover, we performed molecular modeling studies, which revealed that the hydrophobic interaction in the local region of Y30F Cyt b5 was well-remained, whereas Y30H Cyt b5 formed an H-bond network. These observations suggest that the conserved Tyr30 in Cyt b5 is not replaceable due to the presence of both the H-bond network and hydrophobic interaction in the secondary sphere of the heme active site. As demonstrated here for Cyt b5, it may be of practical importance for design of artificial heme proteins by engineering a Tyr in the secondary sphere with improved properties and functions.
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Affiliation(s)
- Shan Hu
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Bo He
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Xiao-Juan Wang
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Shu-Qin Gao
- Laboratory of Protein Structure and Function, University of South China, Hengyang 421001, China
| | - Ge-Bo Wen
- Laboratory of Protein Structure and Function, University of South China, Hengyang 421001, China
| | - Ying-Wu Lin
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China; Laboratory of Protein Structure and Function, University of South China, Hengyang 421001, China.
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27
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Effect of methionine80 heme coordination on domain swapping of cytochrome c. J Biol Inorg Chem 2017; 22:705-712. [DOI: 10.1007/s00775-017-1446-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Accepted: 02/10/2017] [Indexed: 10/20/2022]
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28
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Wu LB, Du KJ, Nie CM, Gao SQ, Wen GB, Tan X, Lin YW. Peroxidase activity enhancement of myoglobin by two cooperative distal histidines and a channel to the heme pocket. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcatb.2016.08.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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29
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Ascenzi P, di Masi A, Leboffe L, Fiocchetti M, Nuzzo MT, Brunori M, Marino M. Neuroglobin: From structure to function in health and disease. Mol Aspects Med 2016; 52:1-48. [DOI: 10.1016/j.mam.2016.10.004] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 10/27/2016] [Accepted: 10/27/2016] [Indexed: 01/01/2023]
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30
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Fülöp A, Sammour DA, Erich K, von Gerichten J, van Hoogevest P, Sandhoff R, Hopf C. Molecular imaging of brain localization of liposomes in mice using MALDI mass spectrometry. Sci Rep 2016; 6:33791. [PMID: 27650487 PMCID: PMC5030664 DOI: 10.1038/srep33791] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Accepted: 09/02/2016] [Indexed: 12/21/2022] Open
Abstract
Phospholipids have excellent biocompatibility and are therefore often used as main components of liposomal drug carriers. In traditional bioanalytics, the in-vivo distribution of liposomal drug carriers is assessed using radiolabeled liposomal constituents. This study presents matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI MSI) as an alternative, label-free method for ex-vivo molecular imaging of liposomal drug carriers in mouse tissue. To this end, indocyanine green as cargo and two liposomal markers, 1,2-dipalmitoyl-sn-glycero-3-phosphoglycerol (DPPG) and 1,2-distearoyl-sn-glycero-3-phosphoethanolamine conjugated with monodisperse polyethylene glycol (PEG36-DSPE) were incorporated into liposomal carriers and administered to mice. We used MALDI MSI of the two lipid markers in both positive and negative ion mode for visualization of liposome integrity and distribution in mouse organs. Additional MSI of hemoglobin in the same tissue slice and pixel-by-pixel computational analysis of co-occurrence of lipid markers and hemoglobin served as indicator of liposome localization either in parenchyma or in blood vessels. Our proof-of-concept study suggests that liposomal components and indocyanine green distributed into all investigated organs.
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Affiliation(s)
- Annabelle Fülöp
- Center for Applied Research in Applied Biomedical Mass Spectrometry (ABIMAS). Paul-Wittsack-Str. 10, 68163 Mannheim, Germany.,Instrumental Analytics and Bioanalytics, Mannheim University of Applied Sciences, Paul-Wittsack-Str. 10, 68163 Mannheim, Germany
| | - Denis A Sammour
- Center for Applied Research in Applied Biomedical Mass Spectrometry (ABIMAS). Paul-Wittsack-Str. 10, 68163 Mannheim, Germany.,Instrumental Analytics and Bioanalytics, Mannheim University of Applied Sciences, Paul-Wittsack-Str. 10, 68163 Mannheim, Germany
| | - Katrin Erich
- Center for Applied Research in Applied Biomedical Mass Spectrometry (ABIMAS). Paul-Wittsack-Str. 10, 68163 Mannheim, Germany.,Instrumental Analytics and Bioanalytics, Mannheim University of Applied Sciences, Paul-Wittsack-Str. 10, 68163 Mannheim, Germany
| | - Johanna von Gerichten
- Lipid Pathobiochemistry, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
| | - Peter van Hoogevest
- Phospholipid Research Center, Im Neuenheimer Feld 515, 69120 Heidelberg, Germany
| | - Roger Sandhoff
- Center for Applied Research in Applied Biomedical Mass Spectrometry (ABIMAS). Paul-Wittsack-Str. 10, 68163 Mannheim, Germany.,Lipid Pathobiochemistry, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
| | - Carsten Hopf
- Center for Applied Research in Applied Biomedical Mass Spectrometry (ABIMAS). Paul-Wittsack-Str. 10, 68163 Mannheim, Germany.,Instrumental Analytics and Bioanalytics, Mannheim University of Applied Sciences, Paul-Wittsack-Str. 10, 68163 Mannheim, Germany.,Institute of Medical Technology, University of Heidelberg and Mannheim University of Applied Sciences, Paul-Wittsack-Str. 10, 68163 Mannheim, Germany
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31
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Novel synthesized 2, 4-DAPG analogues: antifungal activity, mechanism and toxicology. Sci Rep 2016; 6:32266. [PMID: 27562341 PMCID: PMC4999805 DOI: 10.1038/srep32266] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 08/04/2016] [Indexed: 11/08/2022] Open
Abstract
2, 4-Diacetylphloroglucinol (2,4-DAPG), a natural phenolic compound, has been investigated in light of its biological activities against plant pathogens. To improve its potential application, fourteen 2,4-DAPG analogous were synthesized through the Friedel-Crafts reaction using acyl chlorides and phloroglucinol. Of the 2,4-DAPG derivatives, MP4 exhibited much higher antifungal activity against Penicillium digitatum and P. italicum, the major pathogenic fungi in citrus fruit, than 2, 4-DAPG in vitro, and significantly inhibited the development of decay in harvested mandarin (Citrus reticulata Blanco cv. Shatang.) fruit in vivo. It was found that MP4 resulted in the wrinkle of the hyphae in both fungi with serious folds and breakage. In addition, the expression of several cytochrome P450 (CYP) genes were also modified in both fungi by MP4, which might be associated with the disorder of cell membrane formation. Furthermore, the toxicology of MP4 by evaluating the cell proliferation effect on human normal lung epithelial (16HBE) and kidney 293 (HEK293) cells, was significantly lower than that of albesilate, a widely used fungicide in harvested citrus fruit. In summary, the synthesized MP4 has shown a great potential as a novel fungicide that might be useful for control of postharvest decay in citrus fruit.
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32
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Yan DJ, Yuan H, Li W, Xiang Y, He B, Nie CM, Wen GB, Lin YW, Tan X. How a novel tyrosine-heme cross-link fine-tunes the structure and functions of heme proteins: a direct comparitive study of L29H/F43Y myoglobin. Dalton Trans 2016; 44:18815-22. [PMID: 26458300 DOI: 10.1039/c5dt03040d] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
A heme-protein cross-link is a key post-translational modification (PTM) of heme proteins. Meanwhile, the structural and functional consequences of heme-protein cross-links are not fully understood, due to limited studies on a direct comparison of the same protein with and without the cross-link. A Tyr-heme cross-link with a C-O bond is a newly discovered PTM of heme proteins, and is spontaneously formed in F43Y myoglobin (Mb) between the Tyr hydroxyl group and the heme 4-vinyl group in vivo. In this study, we found that with an additional distal His29 introduced in the heme pocket, the double mutant L29H/F43Y Mb can form two distinct forms under different protein purification conditions, with and without a novel Tyr-heme cross-link. By solving the X-ray structures of both forms of L29H/F43Y Mb and performing spectroscopic studies, we made a direct structural and functional comparison in the same protein scaffold. It revealed that the Tyr-heme cross-link regulates the heme distal hydrogen-bonding network, and fine-tunes not only the spectroscopic and ligand binding properties, but also the protein reactivity. Moreover, the formation of the Tyr-heme cross-link in the double mutant L29H/F43Y Mb was investigated in vitro. This study addressed the key issue of how Tyr-heme cross-link fine-tunes the structure and functions of the heme protein, and provided a plausible mechanism for the formation of the newly discovered Tyr-heme cross-link.
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Affiliation(s)
- Dao-Jing Yan
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China.
| | - Hong Yuan
- Department of Chemistry/Shanghai Key Lab of Chemical Biology for Protein Research & Institute of Biomedical Science, Fudan University, Shanghai 200433, China.
| | - Wei Li
- Department of Chemistry/Shanghai Key Lab of Chemical Biology for Protein Research & Institute of Biomedical Science, Fudan University, Shanghai 200433, China.
| | - Yu Xiang
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Bo He
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China.
| | - Chang-Ming Nie
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China.
| | - Ge-Bo Wen
- Laboratory of Protein Structure and Function, University of South China, Hengyang 421001, China
| | - Ying-Wu Lin
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China. and Laboratory of Protein Structure and Function, University of South China, Hengyang 421001, China
| | - Xiangshi Tan
- Department of Chemistry/Shanghai Key Lab of Chemical Biology for Protein Research & Institute of Biomedical Science, Fudan University, Shanghai 200433, China.
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Wu LB, Yuan H, Gao SQ, You Y, Nie CM, Wen GB, Lin YW, Tan X. Regulating the nitrite reductase activity of myoglobin by redesigning the heme active center. Nitric Oxide 2016; 57:21-29. [PMID: 27108710 DOI: 10.1016/j.niox.2016.04.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Revised: 04/13/2016] [Accepted: 04/20/2016] [Indexed: 10/21/2022]
Abstract
Heme proteins perform diverse functions in living systems, of which nitrite reductase (NIR) activity receives much attention recently. In this study, to better understand the structural elements responsible for the NIR activity, we used myoglobin (Mb) as a model heme protein and redesigned the heme active center, by introducing one or two distal histidines, and by creating a channel to the heme center with removal of the native distal His64 gate (His to Ala mutation). UV-Vis kinetic studies, combined with EPR studies, showed that a single distal histidine with a suitable position to the heme iron, i.e., His43, is crucial for nitrite (NO2(-)) to nitric oxide (NO) reduction. Moreover, creation of a water channel to the heme center significantly enhanced the NIR activity compared to the corresponding mutant without the channel. In addition, X-ray crystallographic studies of F43H/H64A Mb and its complexes with NO2(-) or NO revealed a unique hydrogen-bonding network in the heme active center, as well as unique substrate and product binding models, providing valuable structural information for the enhanced NIR activity. These findings enriched our understanding of the structure and NIR activity relationship of heme proteins. The approach of creating a channel in this study is also useful for rational design of other functional heme proteins.
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Affiliation(s)
- Lei-Bin Wu
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Hong Yuan
- Department of Chemistry & Institute of Biomedical Science, Fudan University, Shanghai 200433, China
| | - Shu-Qin Gao
- Laboratory of Protein Structure and Function, University of South China, Hengyang 421001, China
| | - Yong You
- Laboratory of Protein Structure and Function, University of South China, Hengyang 421001, China
| | - Chang-Ming Nie
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Ge-Bo Wen
- Laboratory of Protein Structure and Function, University of South China, Hengyang 421001, China
| | - Ying-Wu Lin
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China; Laboratory of Protein Structure and Function, University of South China, Hengyang 421001, China.
| | - Xiangshi Tan
- Department of Chemistry & Institute of Biomedical Science, Fudan University, Shanghai 200433, China.
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Zhao Y, Du KJ, Gao SQ, He B, Wen GB, Tan X, Lin YW. Distinct mechanisms for DNA cleavage by myoglobin with a designed heme active center. J Inorg Biochem 2016; 156:113-21. [DOI: 10.1016/j.jinorgbio.2016.01.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Revised: 12/29/2015] [Accepted: 01/07/2016] [Indexed: 12/14/2022]
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35
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Karunakaran V. Ultrafast Heme Dynamics of Ferric Cytochrome c in Different Environments: Electronic, Vibrational, and Conformational Relaxation. Chemphyschem 2015; 16:3974-83. [DOI: 10.1002/cphc.201500672] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Revised: 09/23/2015] [Indexed: 12/17/2022]
Affiliation(s)
- Venugopal Karunakaran
- Photosciences and Photonics Section; Chemical Sciences and Technology Division; CSIR-National Institute for Interdisciplinary Science and Technology; Thiruvananthapuram 695 019 Kerala India
- Academy of Scientific and Innovative Research (AcSIR); New Delhi 110 001 India
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Brewitz HH, Kühl T, Goradia N, Galler K, Popp J, Neugebauer U, Ohlenschläger O, Imhof D. Role of the Chemical Environment beyond the Coordination Site: Structural Insight into Fe(III) Protoporphyrin Binding to Cysteine-Based Heme-Regulatory Protein Motifs. Chembiochem 2015; 16:2216-24. [PMID: 26260099 DOI: 10.1002/cbic.201500331] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Indexed: 12/17/2022]
Abstract
The importance of heme as a transient regulatory molecule has become a major focus in biochemical research. However, detailed information about the molecular basis of transient heme-protein interactions is still missing. We report an in-depth structural analysis of Fe(III) heme-peptide complexes by a combination of UV/Vis, resonance Raman, and 2D-NMR spectroscopic methods. The experiments reveal insights both into the coordination to the central iron ion and into the spatial arrangement of the amino acid sequences interacting with protoporphyrin IX. Cysteine-based peptides display different heme-binding behavior as a result of the existence of ordered, partially ordered, and disordered conformations in the heme-unbound state. Thus, the heme-binding mode is clearly the consequence of the nature and flexibility of the residues surrounding the iron ion coordinating cysteine. Our analysis reveals scenarios for transient binding of heme to heme-regulatory motifs in proteins and demonstrates that a thorough structural analysis is required to unravel how heme alters the structure and function of a particular protein.
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Affiliation(s)
- Hans Henning Brewitz
- Department of Pharmaceutical Chemistry I, Pharmaceutical Institute, University of Bonn, Brühler Strasse 7, 53119, Bonn, Germany
| | - Toni Kühl
- Centre National de la Recherche Scientifique (CNRS), Laboratoire BIP-UMR 7281, 31, chemin Joseph Aiguier, Batiment IM, 13009, Marseille, France
| | - Nishit Goradia
- Biomolecular NMR Spectroscopy, Leibniz Institute for Age Research-Fritz Lipmann Institute, Beutenbergstrasse 11, 07745, Jena, Germany
| | - Kerstin Galler
- Center for Sepsis Control and Care (CSCC), Jena University Hospital, Erlanger Allee 101, 07747, Jena, Germany.,Leibniz Institute of Photonic Technology, Albert-Einstein-Strasse 9, 07745, Jena, Germany
| | - Jürgen Popp
- Center for Sepsis Control and Care (CSCC), Jena University Hospital, Erlanger Allee 101, 07747, Jena, Germany.,Leibniz Institute of Photonic Technology, Albert-Einstein-Strasse 9, 07745, Jena, Germany.,Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
| | - Ute Neugebauer
- Center for Sepsis Control and Care (CSCC), Jena University Hospital, Erlanger Allee 101, 07747, Jena, Germany.,Leibniz Institute of Photonic Technology, Albert-Einstein-Strasse 9, 07745, Jena, Germany
| | - Oliver Ohlenschläger
- Biomolecular NMR Spectroscopy, Leibniz Institute for Age Research-Fritz Lipmann Institute, Beutenbergstrasse 11, 07745, Jena, Germany
| | - Diana Imhof
- Department of Pharmaceutical Chemistry I, Pharmaceutical Institute, University of Bonn, Brühler Strasse 7, 53119, Bonn, Germany.
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Lin YW. The broad diversity of heme-protein cross-links: An overview. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2015; 1854:844-59. [DOI: 10.1016/j.bbapap.2015.04.019] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Revised: 03/26/2015] [Accepted: 04/17/2015] [Indexed: 12/30/2022]
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Wu H, Liu Y, Li M, Chong Y, Zeng M, Lo YM, Yin JJ. Size-dependent tuning of horseradish peroxidase bioreactivity by gold nanoparticles. NANOSCALE 2015; 7:4505-13. [PMID: 25684572 DOI: 10.1039/c4nr07056a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Molecules with diverse biological functions, such as heme peroxidases, can be useful tools for identifying potential biological effects of gold nanoparticles (AuNPs) at the molecular level. Here, using UV-Vis, circular dichroism, dynamic light scattering, and electron spin resonance spectroscopy, we report tuning of horseradish peroxidase (HRP) bioactivity by reactant-free AuNPs with diameters of 5, 10, 15, 30 and 60 nm (Au-5 nm, Au-10 nm, Au-15 nm, Au-30 nm and Au-60 nm). HRP conjugation to AuNPs was observed with only Au-5 nm and Au-10 nm prominently increasing the α-helicity of the enzyme to extents inversely related to their size. Au-5 nm inhibited both HRP peroxidase activity toward 3,3',5,5'-tetramethylbenzidine and HRP compound I/II reactivity toward 5,5-dimethyl-1-pyrroline N-oxide. Au-5 nm enhanced the HRP peroxidase activity toward ascorbic acid and the HRP compound I/II reactivity toward redox-active residues in the HRP protein moiety. Further, Au-5 nm also decreased the catalase- and oxidase-like activities of HRP. Au-10 nm showed similar, but weaker effects, while Au-15 nm, Au-30 nm and Au-60 nm had no effect. Results suggest that AuNPs can size-dependently enhance or inhibit HRP bioreactivity toward substrates with different redox potentials via a mechanism involving extension of the HRP substrate access channel and decline in the redox potentials of HRP catalytic intermediates.
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Affiliation(s)
- Haohao Wu
- College of Food Science and Engineering, Ocean University of China, 5 Yushan Road, Qingdao, Shandong Province 266003, China
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39
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Hydrogen-bonding network in heme active site regulates the hydrolysis activity of myoglobin. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcatb.2014.11.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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40
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Du JF, Li W, Li L, Wen GB, Lin YW, Tan X. Regulating the coordination state of a heme protein by a designed distal hydrogen-bonding network. ChemistryOpen 2014; 4:97-101. [PMID: 25969804 PMCID: PMC4420578 DOI: 10.1002/open.201402108] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Indexed: 01/03/2023] Open
Abstract
Heme coordination state determines the functional diversity of heme proteins. Using myoglobin as a model protein, we designed a distal hydrogen-bonding network by introducing both distal glutamic acid (Glu29) and histidine (His43) residues and regulated the heme into a bis-His coordination state with native ligands His64 and His93. This resembles the heme site in natural bis-His coordinated heme proteins such as cytoglobin and neuroglobin. A single mutation of L29E or F43H was found to form a distinct hydrogen-bonding network involving distal water molecules, instead of the bis-His heme coordination, which highlights the importance of the combination of multiple hydrogen-bonding interactions to regulate the heme coordination state. Kinetic studies further revealed that direct coordination of distal His64 to the heme iron negatively regulates fluoride binding and hydrogen peroxide activation by competing with the exogenous ligands. The new approach developed in this study can be generally applicable for fine-tuning the structure and function of heme proteins.
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Affiliation(s)
- Jun-Fang Du
- School of Chemistry and Chemical Engineering, University of South China Hengyang, 421001, (P. R. China))
| | - Wei Li
- Department of Chemistry and Institute of Biomedical Science, Fudan University Shanghai, 200433, (P. R. China)
| | - Lianzhi Li
- School of Chemistry and Chemical Engineering, Liaocheng University Liaocheng, 252059, (P. R. China)
| | - Ge-Bo Wen
- Laboratory of Protein Structure and Function, University of South China Hengyang, 421001, (P. R. China)
| | - Ying-Wu Lin
- School of Chemistry and Chemical Engineering, University of South China Hengyang, 421001, (P. R. China)) ; Laboratory of Protein Structure and Function, University of South China Hengyang, 421001, (P. R. China)
| | - Xiangshi Tan
- Department of Chemistry and Institute of Biomedical Science, Fudan University Shanghai, 200433, (P. R. China)
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Lin YW, Shu XG, Du KJ, Nie CM, Wen GB. Computational insight into nitration of human myoglobin. Comput Biol Chem 2014; 52:60-5. [DOI: 10.1016/j.compbiolchem.2014.09.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2014] [Revised: 09/08/2014] [Accepted: 09/13/2014] [Indexed: 11/29/2022]
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42
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Kandel SE, Lampe JN. Role of protein-protein interactions in cytochrome P450-mediated drug metabolism and toxicity. Chem Res Toxicol 2014; 27:1474-86. [PMID: 25133307 PMCID: PMC4164225 DOI: 10.1021/tx500203s] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
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Through their unique oxidative chemistry,
cytochrome P450 monooxygenases
(CYPs) catalyze the elimination of most drugs and toxins from the
human body. Protein–protein interactions play a critical role
in this process. Historically, the study of CYP–protein interactions
has focused on their electron transfer partners and allosteric mediators,
cytochrome P450 reductase and cytochrome b5. However, CYPs can bind
other proteins that also affect CYP function. Some examples include
the progesterone receptor membrane component 1, damage resistance
protein 1, human and bovine serum albumin, and intestinal fatty acid
binding protein, in addition to other CYP isoforms. Furthermore, disruption
of these interactions can lead to altered paths of metabolism and
the production of toxic metabolites. In this review, we summarize
the available evidence for CYP protein–protein interactions
from the literature and offer a discussion of the potential impact
of future studies aimed at characterizing noncanonical protein–protein
interactions with CYP enzymes.
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Affiliation(s)
- Sylvie E Kandel
- XenoTech, LLC , 16825 West 116th Street, Lenexa, Kansas 66219, United States
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Distal-proximal crosstalk in the heme binding pocket of the NO sensor DNR. Biometals 2014; 27:763-73. [PMID: 25007853 DOI: 10.1007/s10534-014-9770-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Accepted: 06/25/2014] [Indexed: 01/10/2023]
Abstract
In the opportunistic pathogen Pseudomonas aeruginosa the denitrification process is triggered by nitric oxide (NO) and plays a crucial role for the survival in chronic infection sites as a microaerobic-anaerobic biofilm. This respiratory pathway is transcriptionally induced by DNR, an heme-based gas sensor which positively responds to NO. Molecular details of the NO sensing mechanism employed by DNR are now emerging: we recently reported an in vitro study which dissected, for the first time, the heme-iron environment and identified one of the heme axial ligand (i.e. His187), found to be crucial to respond to NO. Nevertheless, the identification of the second heme axial ligand has been unsuccessful, given that a peculiar phenomenon of ligand switching around the heme-iron presumably occurs in DNR. The unusual heme binding properties of DNR could be due to the remarkable flexibility in solution of DNR itself, which, in turns, is crucial for the sensing activity; protein flexibility and dynamics indeed represent a common strategy employed by heme-based redox sensors, which present features deeply different from those of "canonical" hemeproteins. The capability of DNR to deeply rearrange around the heme-iron as been here demonstrated by means of spectroscopic characterization of the H167A/H187A DNR double mutant, which shows unusual kinetics of binding of NO and CO. Moreover, we show that the alteration (such as histidines mutations) of the distal side of the heme pocket is perceived by the proximal one, possibly via the DNR protein chain.
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Sun MH, Liu SQ, Du KJ, Nie CM, Lin YW. A spectroscopic study of uranyl-cytochrome b5/cytochrome c interactions. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 118:130-137. [PMID: 24051281 DOI: 10.1016/j.saa.2013.08.112] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Revised: 08/28/2013] [Accepted: 08/28/2013] [Indexed: 06/02/2023]
Abstract
Uranium is harmful to human health due to its radiation damage and the ability of uranyl ion (UO2(2+)) to interact with various proteins and disturb their biological functions. Cytochrome b5 (cyt b5) is a highly negatively charged heme protein and plays a key role in mediating cytochrome c (cyt c) signaling in apoptosis by forming a dynamic cyt b5-cyt c complex. In previous molecular modeling study in combination with UV-Vis studies, we found that UO2(2+) is capable of binding to cyt b5 at surface residues, Glu37 and Glu43. In this study, we further investigated the structural consequences of cyt b5 and cyt c, as well as cyt b5-cyt c complex, upon uranyl binding, by fluorescence spectroscopic and circular dichroism techniques. Moreover, we proposed a uranyl binding site for cyt c at surface residues, Glu66 and Glu69, by performing a molecular modeling study. It was shown that uranyl binds to cyt b5 (KD=10 μM), cyt c (KD=87 μM), and cyt b5-cyt c complex (KD=30 μM) with a different affinity, which slightly alters the protein conformation and disturbs the interaction of cyt b5-cyt c complex. Additionally, we investigated the functional consequences of uranyl binding to the protein surface, which decreases the inherent peroxidase activity of cyt c. The information of uranyl-cyt b5/cyt c interactions gained in this study likely provides a clue for the mechanism of uranyl toxicity.
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Affiliation(s)
- Mei-Hui Sun
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
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45
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Lin Y, Wang J, Lu Y. Functional tuning and expanding of myoglobin by rational protein design. Sci China Chem 2014. [DOI: 10.1007/s11426-014-5063-5] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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46
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Kendziora DM, Ahmed I, Fruk L. Multifunctional linker for orthogonal decoration of gold nanoparticles with DNA and protein. RSC Adv 2014. [DOI: 10.1039/c4ra01773k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
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