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Mathur S, Yadav SK, Yadav K, Bhatt S, Kundu S. A novel single sensor hemoglobin domain from the thermophilic cyanobacteria Thermosynechococcus elongatus BP-1 exhibits higher pH but lower thermal stability compared to globins from mesophilic organisms. Int J Biol Macromol 2023; 240:124471. [PMID: 37076076 DOI: 10.1016/j.ijbiomac.2023.124471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 04/11/2023] [Accepted: 04/12/2023] [Indexed: 04/21/2023]
Abstract
Thermosynechococcus elongatus-BP1 belongs to the class of photoautotrophic cyanobacterial organisms. The presence of chlorophyll a, carotenoids, and phycocyanobilin are the characteristics that categorize T. elongatus as a photosynthetic organism. Here, we report the structural and spectroscopic characteristics of novel hemoglobin (Hb) Synel Hb from T.elongatus, synonymous with Thermosynechococcus vestitus BP-1. The X-ray crystal structure (2.15 Å) of Synel Hb suggests the presence of a globin domain with a pre-A helix similar to the sensor domain (S) family of Hbs. The rich hydrophobic core accommodates heme in a penta-coordinated state and readily binds an extraneous ligand(imidazole). The absorption and circular dichroic spectral analysis of Synel Hb reiteratedthat the heme is in FeIII+ state with a predominantly α-helical structure similar to myoglobin. Synel Hb displays higher resistance to structural perturbations induced via external stresses like pH and guanidium hydrochloride, which is comparable to Synechocystis Hb. However, Synel Hb exhibited lower thermal stability compared to mesophilic hemoglobins. Overall, the data is suggestive of the structural sturdiness of Synel Hb, which probably corroborates its origin in extreme thermophilic conditions. The stable globin provides scope for further investigation and may lead to new insights with scope for engineering stability in hemoglobin-based oxygen carriers.
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Affiliation(s)
- Shruti Mathur
- Department of Biochemistry, University of Delhi South Campus, New Delhi 110021, India; Delhi School of Public Health, Institute of Eminence, University of Delhi, Delhi 110007, India
| | - Sanjeev Kumar Yadav
- Department of Biochemistry, University of Delhi South Campus, New Delhi 110021, India
| | - Kajal Yadav
- Department of Biochemistry, University of Delhi South Campus, New Delhi 110021, India
| | - Shruti Bhatt
- Department of Biochemistry, University of Delhi South Campus, New Delhi 110021, India
| | - Suman Kundu
- Department of Biochemistry, University of Delhi South Campus, New Delhi 110021, India; Delhi School of Public Health, Institute of Eminence, University of Delhi, Delhi 110007, India; Birla Institute of Technology and Science Pilani, K.K.Birla Goa Campus, Goa 403726, India.
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2
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Žagar A, Simčič T, Dajčman U, Megía-Palma R. Parasitemia and elevation as predictors of hemoglobin concentration and antioxidant capacity in two sympatric lizards. Comp Biochem Physiol A Mol Integr Physiol 2022; 270:111233. [PMID: 35589083 DOI: 10.1016/j.cbpa.2022.111233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 05/12/2022] [Accepted: 05/12/2022] [Indexed: 11/25/2022]
Abstract
Studies which quantify the influence of abiotic factors on physiological variation are paramount to comprehend organismal responses to diverse environments. We studied three physiological aspects of metabolism in two sympatric and ecologically similar European lizard species, Podarcis muralis and Iberolacerta horvathi, across an 830-m elevational gradient. We collected blood samples and tail tips from adult lizards, which were analyzed for parasitemia, hemoglobin concentration, potential metabolic activity and catalase activity. Hemoglobin concentration was higher in males than females and it increased across elevation in one of the studied species - P. muralis. Parasitemia was not an important predictor of the variation in hemoglobin concentration, which suggests that blood parasites do not constraint the aerobic capacity of the lizards. On the other hand, catalase activity reflected increased antioxidant activity in the presence of higher parasitemia, possibly acting as an adaptive mechanism to reduce oxidative stress during immune activation. Potential metabolic activity, as a proxy for maximum respiratory enzymatic capacity, did not differ between species or sexes nor was it affected by elevation or levels of parasitemia. The results provide insight into the relationships between physiological, biotic, and environmental traits in sympatric lizards.
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Affiliation(s)
- Anamarija Žagar
- Department of Organisms and Ecosystem Research, National Institute of Biology, Večna pot 111, SI-1000 Ljubljana, Slovenia; CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, Universidade do Porto, P-4485-661 Vairão, Portugal.
| | - Tatjana Simčič
- Department of Organisms and Ecosystem Research, National Institute of Biology, Večna pot 111, SI-1000 Ljubljana, Slovenia
| | - Urban Dajčman
- Department of Organisms and Ecosystem Research, National Institute of Biology, Večna pot 111, SI-1000 Ljubljana, Slovenia; Biotechnical Faculty, University of Ljubljana, Večna pot 111, SI-1000 Ljubljana, Slovenia
| | - Rodrigo Megía-Palma
- CIBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, InBIO Laboratório Associado, Campus de Vairão, Universidade do Porto, P-4485-661 Vairão, Portugal; BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, P-4485-661 Vairão, Portugal; Universidad de Alcalá (UAH), Department of Biomedicine and Biotechnology, School of Pharmacy, E-28805, Alcalá de Henares, Madrid, Spain
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3
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Huang X, Wang R, Zhang Z, Wang G, Gao B. Effects of Pre-, Post- and Intra-Exercise Hyperbaric Oxygen Therapy on Performance and Recovery: A Systematic Review and Meta-Analysis. Front Physiol 2021; 12:791872. [PMID: 34887780 PMCID: PMC8650584 DOI: 10.3389/fphys.2021.791872] [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: 10/09/2021] [Accepted: 11/02/2021] [Indexed: 11/17/2022] Open
Abstract
Background: As a World Anti-doping Agency (WADA)-approved treatment, hyperbaric oxygen (HBO2) therapy has been used to improve exercise performance in sports practice. Objective: We aimed to investigate the effect of pre-, post-, and intra-exercise HBO2 therapy on performance and recovery. Methods: A literature search was conducted using EMBASE, CENTRAL, PubMed, Web of Science, and SPORTDiscus to obtain literature published until May 2021. A total of 1,712 studies that met the following criteria were identified: (1) enrolled healthy adults who were considered physically active; (2) evaluated HBO2 therapy; (3) included a control group exposed to normobaric normoxic (NN) conditions; (4) involved physical testing (isokinetic or dynamic strength exercise, maximal incremental treadmill/cycle exercise, etc.); and (5) included at least one exercise performance/recovery index as an outcome measure. The Cochrane risk of bias assessment tool was used to evaluate the included studies, and the heterogeneity of therapy effects was assessed using the I2 statistic by Review Manager 5.3. Results: Ten studies (166 participants) were included in the qualitative analysis, and six studies (69 participants) were included in the quantitative synthesis (meta-analysis). In comparisons between participants who underwent HBO2 therapy and NN conditions, the effects of pre-exercise HBO2 therapy on exercise performance were not statistically significant (P > 0.05), and the effects of post-exercise HBO2 therapy on recovery were not statistically significant either (P > 0.05). Although individual studies showed positive effects of intra-exercise HBO2 therapy on exercise performance, a meta-analysis could not be performed. Conclusion: Hyperbaric oxygen therapy before or after exercise had no significant effect on performance and recovery. However, hyperbaric oxygen therapy during exercise could improve muscle endurance performance, which needs to be confirmed by further empirical studies. At present, the practical relevance of these findings should be treated with caution.
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Affiliation(s)
- Xizhang Huang
- School of Physical Education and Sport Training, Shanghai University of Sport, Shanghai, China.,Key Laboratory of Winter Sports Training Monitoring and Control, Heilongjiang Research Institute of Sports Science, Harbin, China
| | - Ran Wang
- School of Physical Education and Sport Training, Shanghai University of Sport, Shanghai, China
| | - Zheng Zhang
- School of Physical Education and Sport Training, Shanghai University of Sport, Shanghai, China
| | - Gang Wang
- Key Laboratory of Winter Sports Training Monitoring and Control, Heilongjiang Research Institute of Sports Science, Harbin, China
| | - Binghong Gao
- School of Physical Education and Sport Training, Shanghai University of Sport, Shanghai, China
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4
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Yang Y, Gao C, Yang T, Sha Y, Cai Y, Wang X, Yang Q, Liu C, Wang B, Zhao S. Characteristics of Tibetan pig lung tissue in response to a hypoxic environment on the Qinghai-Tibet Plateau. Arch Anim Breed 2021; 64:283-292. [PMID: 34235247 PMCID: PMC8253108 DOI: 10.5194/aab-64-283-2021] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 05/18/2021] [Indexed: 01/04/2023] Open
Abstract
To adapt to the plateau environment, Tibetan pigs' lungs have developed a
unique physiological mechanism during evolution. The vascular corrosion
casting technique and scanning electron microscopy were used to understand
arterial architecture. Blood physiological index and quantitative real-time PCR (qRT-PCR) were used
for
assessing whether the lung can regulate the body through anatomical, physiological
and molecular mechanisms to adapt to hypoxic environments. Our study showed
that the lungs of Tibetan pigs were heavier and wider and that the pulmonary
arteries were thicker and branched and had a denser vascular network than
those of Landrace pigs. The hemoglobin (HGB), mean corpuscular hemoglobin
concentration (MCHC) values of high-altitude pigs were significantly higher
than those of low-altitude pigs. The expression levels of HIF-
1α
,
EPAS1, EPO and VEGF, but not those of
eNOSand EGLN1, were significantly higher in the lungs of
high-altitude pigs than in those from pigs at a lower altitude (
P<0.05
). These findings and a comprehensive analysis help elucidate the
pulmonary mechanism of hypoxic adaptation in pigs.
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Affiliation(s)
- Yanan Yang
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China
| | - Caixia Gao
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150069, China
| | - Tianliang Yang
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China
| | - Yuzhu Sha
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China
| | - Yuan Cai
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China
| | - Xinrong Wang
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China
| | - Qiaoli Yang
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China
| | - Chengze Liu
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China
| | - Biao Wang
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China
| | - Shengguo Zhao
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China
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5
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Chu Y, Tang W, Zhang Z, Li C, Qian J, Wei X, Ying T, Lu W, Zhan C. Deciphering Protein Corona by scFv-Based Affinity Chromatography. NANO LETTERS 2021; 21:2124-2131. [PMID: 33617264 DOI: 10.1021/acs.nanolett.0c04806] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
It remains challenging to precisely decipher the structural and functional characteristics of protein coronas. To overcome the drawbacks frequently occurring in the traditional separation methods, an anti-PEG single-chain variable fragment (PEG-scFv) based affinity chromatography (AfC) was developed to achieve precise and efficient separation of protein coronas on PEGylated liposomes (sLip). His-tagged PEG-scFv could readily capture sLip without affecting protein corona compositions, and separate sLip/protein complex from plasma protein aggregates and endogenous vesicles through the Ni-NTA column. AfC demonstrated 43-fold higher protein corona collecting efficiency than centrifugation, which was extremely crucial for separation of in vivo protein coronas due to the limitation of sample size. AfC evaded contamination by endogenous vesicles and protein aggregates occurring in centrifugation, and reserved the loosely bound proteins, providing an unprecedented approach to deeply decipher protein coronas. The scFv-based AfC also paves new avenues for the separation of protein coronas formed on other nanomedicines.
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Affiliation(s)
- Yuxiu Chu
- Department of Pharmacology, School of Basic Medical Sciences, and Center of Medical Research and Innovation, Shanghai Pudong Hospital, Fudan University, Shanghai, 200032, P.R. China
| | - Wenjing Tang
- MOE Key Laboratory of Smart Drug Delivery, School of Pharmacy, and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 201203, P.R. China
| | - Zui Zhang
- Department of Pharmacology, School of Basic Medical Sciences, and Center of Medical Research and Innovation, Shanghai Pudong Hospital, Fudan University, Shanghai, 200032, P.R. China
| | - Cheng Li
- Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS), School of Basic Medical Sciences, Fudan University, Shanghai, 200032, P.R. China
| | - Jun Qian
- MOE Key Laboratory of Smart Drug Delivery, School of Pharmacy, and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 201203, P.R. China
| | - Xiaoli Wei
- Department of Pharmacology, School of Basic Medical Sciences, and Center of Medical Research and Innovation, Shanghai Pudong Hospital, Fudan University, Shanghai, 200032, P.R. China
| | - Tianlei Ying
- Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS), School of Basic Medical Sciences, Fudan University, Shanghai, 200032, P.R. China
| | - Weiyue Lu
- MOE Key Laboratory of Smart Drug Delivery, School of Pharmacy, and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 201203, P.R. China
| | - Changyou Zhan
- Department of Pharmacology, School of Basic Medical Sciences, and Center of Medical Research and Innovation, Shanghai Pudong Hospital, Fudan University, Shanghai, 200032, P.R. China
- MOE Key Laboratory of Smart Drug Delivery, School of Pharmacy, and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 201203, P.R. China
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Bao Y, Wang J, Li C, Li P, Wang S, Lin Z. A preliminary study on the antibacterial mechanism of Tegillarca granosa hemoglobin by derived peptides and peroxidase activity. FISH & SHELLFISH IMMUNOLOGY 2016; 51:9-16. [PMID: 26876330 DOI: 10.1016/j.fsi.2016.02.004] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 01/30/2016] [Accepted: 02/05/2016] [Indexed: 05/16/2023]
Abstract
The blood clam, Tegillarca granosa, is one of the few bivalve molluscs containing hemoglobin (Hb). In the present study, we purified two types of T. granosa hemoglobin, Tg-HbI and Tg-HbII, using size exclusion chromatography and measured their antibacterial and peroxidase activities. We also tested antibacterial activities of peptides prepared by trypsin digestion of purified Tg-Hb and reversed-phase high-performance liquid chromatography purification. Purified Tg-HbI and Tg-HbII showed antibacterial activity against Escherichia coli, Pseudomonas putida, Bacillus subtilis, and Bacillus firmus, with differences in minimal inhibitory concentrations (MICs), but lacked antibacterial activity against Vibrio alginolyticus, Vibrio parahaemolyticus, Vibrio harveyi and Staphylococcus aureus. In contrast, 7 Tg-Hb derived peptides exhibited varying degrees of antibacterial activity against V. alginolyticus (MICs: 12-200 μg/ml), V. parahaemolyticus (11-100 μg/ml) and V. harveyi (1-200 μg/ml). The antibacterial activity of Hb derived peptides was confirmed by fluorescence microscopy. In addition, peroxidase activity was detected in Tg-HbI and Tg-HbII. The results indicated that in addition to functioning as a respiratory protein T. granosa hemoglobins likely play a role in host antibacterial defense probably via a peroxidase activity of native molecules and some internal peptides released from the proteins.
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Affiliation(s)
- Yongbo Bao
- Zhejiang Key Laboratory of Aquatic Germplasm Resources, College of Biological & Environmental Sciences, Zhejiang Wanli University, Zhejiang 315100, PR China
| | - Juanjuan Wang
- Zhejiang Key Laboratory of Aquatic Germplasm Resources, College of Biological & Environmental Sciences, Zhejiang Wanli University, Zhejiang 315100, PR China; School of Marine Sciences, Ningbo University, Ningbo, Zhejiang 315211, PR China
| | - Chenghua Li
- School of Marine Sciences, Ningbo University, Ningbo, Zhejiang 315211, PR China
| | - Peifen Li
- Zhejiang Key Laboratory of Aquatic Germplasm Resources, College of Biological & Environmental Sciences, Zhejiang Wanli University, Zhejiang 315100, PR China; School of Marine Sciences, Ningbo University, Ningbo, Zhejiang 315211, PR China
| | - Sufang Wang
- Zhejiang Key Laboratory of Aquatic Germplasm Resources, College of Biological & Environmental Sciences, Zhejiang Wanli University, Zhejiang 315100, PR China.
| | - Zhihua Lin
- Zhejiang Key Laboratory of Aquatic Germplasm Resources, College of Biological & Environmental Sciences, Zhejiang Wanli University, Zhejiang 315100, PR China.
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7
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Gesto-Borroto R, Sánchez-Sánchez M, Arredondo-Peter R. A bioinformatics insight to rhizobial globins: gene identification and mapping, polypeptide sequence and phenetic analysis, and protein modeling. F1000Res 2015; 4:117. [PMID: 26594329 PMCID: PMC4648194 DOI: 10.12688/f1000research.6392.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/29/2015] [Indexed: 11/20/2022] Open
Abstract
Globins (Glbs) are proteins widely distributed in organisms. Three evolutionary families have been identified in Glbs: the M, S and T Glb families. The M Glbs include flavohemoglobins (fHbs) and single-domain Glbs (SDgbs); the S Glbs include globin-coupled sensors (GCSs), protoglobins and sensor single domain globins, and the T Glbs include truncated Glbs (tHbs). Structurally, the M and S Glbs exhibit 3/3-folding whereas the T Glbs exhibit 2/2-folding. Glbs are widespread in bacteria, including several rhizobial genomes. However, only few rhizobial Glbs have been characterized. Hence, we characterized Glbs from 62 rhizobial genomes using bioinformatics methods such as data mining in databases, sequence alignment, phenogram construction and protein modeling. Also, we analyzed soluble extracts from
Bradyrhizobiumjaponicum USDA38 and USDA58 by (reduced + carbon monoxide (CO)
minus reduced) differential spectroscopy. Database searching showed that only
fhb,
sdgb,
gcs and
thb genes exist in the rhizobia analyzed in this work. Promoter analysis revealed that apparently several rhizobial
glb genes are not regulated by a -10 promoter but might be regulated by -35 and Fnr (fumarate-nitrate reduction regulator)-like promoters. Mapping analysis revealed that rhizobial
fhbs and
thbs are flanked by a variety of genes whereas several rhizobial
sdgbs and
gcss are flanked by genes coding for proteins involved in the metabolism of nitrates and nitrites and chemotaxis, respectively. Phenetic analysis showed that rhizobial Glbs segregate into the M, S and T Glb families, while structural analysis showed that predicted rhizobial SDgbs and fHbs and GCSs globin domain and tHbs fold into the 3/3- and 2/2-folding, respectively. Spectra from
B.
japonicum USDA38 and USDA58 soluble extracts exhibited peaks and troughs characteristic of bacterial and vertebrate Glbs thus indicating that putative Glbs are synthesized in
B.
japonicum USDA38 and USDA58.
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Affiliation(s)
- Reinier Gesto-Borroto
- Laboratorio de Biofísica y Biología Molecular, Centro de Investigación en Dinámica Celular, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Colonia Chamilpa, Morelos, 62210, Mexico
| | - Miriam Sánchez-Sánchez
- Laboratorio de Biofísica y Biología Molecular, Centro de Investigación en Dinámica Celular, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Colonia Chamilpa, Morelos, 62210, Mexico
| | - Raúl Arredondo-Peter
- Laboratorio de Biofísica y Biología Molecular, Centro de Investigación en Dinámica Celular, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Colonia Chamilpa, Morelos, 62210, Mexico
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8
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Zhu L, Kurt N, Choi J, Lapidus LJ, Cavagnero S. Sub-millisecond chain collapse of the Escherichia coli globin ApoHmpH. J Phys Chem B 2013; 117:7868-77. [PMID: 23750553 DOI: 10.1021/jp400174e] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Myoglobins are ubiquitous proteins that play a seminal role in oxygen storage, transport, and NO metabolism. The folding mechanism of apomyoglobins from different species has been studied to a fair extent over the last two decades. However, integrated investigations of the entire process, including both the early (sub-ms) and late (ms-s) folding stages, have been missing. Here, we study the folding kinetics of the single-Trp Escherichia coli globin apoHmpH via a combination of continuous-flow microfluidic and stopped-flow approaches. A rich series of molecular events emerges, spanning a very wide temporal range covering more than 7 orders of magnitude, from sub-microseconds to tens of seconds. Variations in fluorescence intensity and spectral shifts reveal that the protein region around Trp120 undergoes a fast collapse within the 8 μs mixing time and gradually reaches a native-like conformation with a half-life of 144 μs from refolding initiation. There are no further fluorescence changes beyond ca. 800 μs, and folding proceeds much more slowly, up to 20 s, with acquisition of the missing helicity (ca. 30%), long after consolidation of core compaction. The picture that emerges is a gradual acquisition of native structure on a free-energy landscape with few large barriers. Interestingly, the single tryptophan, which lies within the main folding core of globins, senses some local structural consolidation events after establishment of native-like core polarity (i.e., likely after core dedydration). In all, this work highlights how the main core of the globin fold is capable of becoming fully native efficiently, on the sub-millisecond time scale.
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Affiliation(s)
- Li Zhu
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
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9
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Tertiary and quaternary effects in the allosteric regulation of animal hemoglobins. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2013; 1834:1860-72. [PMID: 23523886 DOI: 10.1016/j.bbapap.2013.03.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2013] [Revised: 03/07/2013] [Accepted: 03/08/2013] [Indexed: 12/16/2022]
Abstract
In the last decade, protein allostery has experienced a major resurgence, boosted by the extension of the concept to systems of increasing complexity and by its exploitation for the development of drugs. Expansion of the field into new directions has not diminished the key role of hemoglobin as a test molecule for theory and experimental validation of allosteric models. Indeed, the diffusion of hemoglobins in all kingdoms of life and the variety of functions and of quaternary assemblies based on a common tertiary fold indicate that this superfamily of proteins is ideally suited for investigating the physical and molecular basis of allostery and firmly maintains its role as a main player in the field. This review is an attempt to briefly recollect common and different strategies adopted by metazoan hemoglobins, from monomeric molecules to giant complexes, exploiting homotropic and heterotropic allostery to increase their functional dynamic range. This article is part of a Special Issue entitled: Oxygen Binding and Sensing Proteins.
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10
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Bao Y, Wang Q, Lin Z. Hemoglobin of the bloody clam Tegillarca granosa (Tg-HbI) is involved in the immune response against bacterial infection. FISH & SHELLFISH IMMUNOLOGY 2011; 31:517-523. [PMID: 21782953 DOI: 10.1016/j.fsi.2011.05.029] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2011] [Revised: 05/22/2011] [Accepted: 05/29/2011] [Indexed: 05/31/2023]
Abstract
Hemoglobins (Hb) are the major protein components of erythrocytes circulating in the red blood, but can serve additional functions besides the transport of oxygen. Here, the cDNA of the bloody clam (Tegillarca granosa) Hb dimer (designated Tg-HbI) was cloned and was found to be 748 bp in length, consisting of an open reading frame of 441 bp encoding a polypeptide of 147 amino acids. The deduced amino acid sequence of Tg-HbI shared 81.6% similarity with HbI from two species of the genus Scapharca and 46-51% similarity with the Hb proteins from other mollusks. The 3D structure of bloody clam Tg-HbI was predicted by the SWISS-MODEL Protein Modelling Server and compared with that of Scapharca kagoshimensis. The mRNA transcript of Tg-HbI was detected in all of the clam cells/tissues examined, including haemocytes, the adductor muscle, foot, hepatopancreas, gill and mantle. The mRNA expression of Tg-HbI was significantly up-regulated after Vibrio parahaemolyticus, lipopolysaccharide and peptidoglycan challenge, indicating that Tg-HbI was involved in the immune defence responses against bacterial infection and exposure to bacterial pathogenic factors. As the first functional research on the Hb protein in bloody clam, our findings provide new insight into the innate immune defence mechanisms of T. granosa and other mollusks.
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Affiliation(s)
- Yongbo Bao
- College of Biological and Environmental Sciences, Zhejiang Wanli University, 8 South Qianhu Road, Ningbo, Zhejiang 315100, China
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11
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Harding MM, Nowicki MW, Walkinshaw MD. Metals in protein structures: a review of their principal features. CRYSTALLOGR REV 2010. [DOI: 10.1080/0889311x.2010.485616] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Marjorie M. Harding
- a Centre for Translational and Chemical Biology, University of Edinburgh, Michael Swann Building , Mayfield Road, Edinburgh , EH9 3JR , UK
| | - Matthew W. Nowicki
- a Centre for Translational and Chemical Biology, University of Edinburgh, Michael Swann Building , Mayfield Road, Edinburgh , EH9 3JR , UK
| | - Malcolm D. Walkinshaw
- a Centre for Translational and Chemical Biology, University of Edinburgh, Michael Swann Building , Mayfield Road, Edinburgh , EH9 3JR , UK
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12
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Pelster B, Gittenberger‐de Groot A, Poelmann R, Rombough P, Schwerte T, Thompson M. Functional Plasticity of the Developing Cardiovascular System: Examples from Different Vertebrates. Physiol Biochem Zool 2010; 83:775-91. [DOI: 10.1086/656004] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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13
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Henning S, Mormann M, Peter-Katalinić J, Pohlentz G. Direct analysis of α- and β-chains of hemoglobins from mammalian blood samples by nanoESI mass spectrometry during in-capillary proteolytic digestion. Amino Acids 2010; 41:343-50. [DOI: 10.1007/s00726-010-0671-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2010] [Accepted: 06/17/2010] [Indexed: 02/02/2023]
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14
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Wang X, Wu W, Lin G, Li D, Wu G, Wang J. Temporal Proteomic Analysis Reveals Continuous Impairment of Intestinal Development in Neonatal Piglets with Intrauterine Growth Restriction. J Proteome Res 2009; 9:924-35. [DOI: 10.1021/pr900747d] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Xiaoqiu Wang
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China 100193, and Department of Animal Science, Texas A&M University, College Station, Texas 77843
| | - Weizong Wu
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China 100193, and Department of Animal Science, Texas A&M University, College Station, Texas 77843
| | - Gang Lin
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China 100193, and Department of Animal Science, Texas A&M University, College Station, Texas 77843
| | - Defa Li
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China 100193, and Department of Animal Science, Texas A&M University, College Station, Texas 77843
| | - Guoyao Wu
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China 100193, and Department of Animal Science, Texas A&M University, College Station, Texas 77843
| | - Junjun Wang
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China 100193, and Department of Animal Science, Texas A&M University, College Station, Texas 77843
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15
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Verde C, Giordano D, Russo R, Riccio A, Vergara A, Mazzarella L, di Prisco G. Hemoproteins in the cold. Mar Genomics 2009; 2:67-73. [DOI: 10.1016/j.margen.2009.03.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2008] [Revised: 01/16/2009] [Accepted: 03/02/2009] [Indexed: 11/25/2022]
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16
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Wajcman H, Kiger L, Marden MC. Structure and function evolution in the superfamily of globins. C R Biol 2008; 332:273-82. [PMID: 19281958 DOI: 10.1016/j.crvi.2008.07.026] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2008] [Accepted: 07/30/2008] [Indexed: 11/16/2022]
Abstract
The superfamily of globins has emerged some 4000 Myr from a common ancestor, which was among the basic protein components required for life. Globins are present in the three kingdoms of life. From a structure point of view, these molecules are defined by the presence of a characteristic protein fold, rich in alpha-helix, surrounding a heme group. Depending on the species or organs, they may be physiologically active as monomers, tetramers or large size polymers. Their function varies from the classical reversible binding of oxygen for transport and storage to cytoprotection against reactive oxygen species, NO scavenging, signaling in oxygen dependent metabolic pathways, or possibly other specific properties involving ligand or electron transfer. All these aspects are discussed in this review.
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Affiliation(s)
- Henri Wajcman
- INSERM U841, Equipe 11, CHU Henri-Mondor, 94010 Créteil, France.
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17
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Lu C, Egawa T, Mukai M, Poole RK, Yeh SR. Hemoglobins from Mycobacterium tuberculosis and Campylobacter jejuni: A Comparative Study with Resonance Raman Spectroscopy. Methods Enzymol 2008; 437:255-86. [DOI: 10.1016/s0076-6879(07)37014-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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18
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Lu C, Egawa T, Wainwright LM, Poole RK, Yeh SR. Structural and Functional Properties of a Truncated Hemoglobin from a Food-borne Pathogen Campylobacter jejuni. J Biol Chem 2007; 282:13627-36. [PMID: 17339325 DOI: 10.1074/jbc.m609397200] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Campylobacter jejuni contains two hemoglobins, Cgb and Ctb. Cgb has been suggested to perform an NO detoxification reaction to protect the bacterium against NO attack. On the other hand, the physiological function of Ctb, a class III truncated hemoglobin, remains unclear. By using CO as a structural probe, resonance Raman data show that the distal heme pocket of Ctb exhibits a positive electrostatic potential. In addition, two ligand-related vibrational modes, nu(Fe-O(2)) and nu(O-O), were identified in the oxy derivative, with frequencies at 542 and 1132 cm(-1), respectively, suggesting the presence of an intertwined H-bonding network surrounding the heme-bound ligand, which accounts for its unusually high oxygen affinity (222 microm(-1)). Mutagenesis studies of various distal mutants suggest that the heme-bound dioxygen is stabilized by H-bonds donated from the Tyr(B10) and Trp(G8) residues, which are highly conserved in the class III truncated hemoglobins; furthermore, an additional H-bond donated from the His(E7) to the Tyr(B10) further regulates these H-bonding interactions by restricting the conformational freedom of the phenolic side chain of the Tyr(B10). Taken together, the data suggest that it is the intricate balance of the H-bonding interactions that determines the unique ligand binding properties of Ctb. The extremely high oxygen affinity of Ctb makes it unlikely to function as an oxygen transporter; on the other hand, the distal heme environment of Ctb is surprisingly similar to that of cytochrome c peroxidase, suggesting a role of Ctb in performing a peroxidase or P450-type of oxygen chemistry.
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Affiliation(s)
- Changyuan Lu
- Department of Physiology and Biophysics, Albert Einstein College of Medicine, Bronx, New York 10461, USA
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19
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Murray JW, Delumeau O, Lewis RJ. Structure of a nonheme globin in environmental stress signaling. Proc Natl Acad Sci U S A 2005; 102:17320-5. [PMID: 16301540 PMCID: PMC1297668 DOI: 10.1073/pnas.0506599102] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2005] [Indexed: 11/18/2022] Open
Abstract
RsbR is a regulator of sigma(B), the RNA polymerase sigma factor subunit responsible for transcribing the general stress response genes when environmental stress is imposed on Bacillus subtilis. The C-terminal domain of RsbR and its paralogues is a substrate for the kinase function of another sigma(B) regulator, RsbT, but the amino acid sequence of the N-terminal domain of RsbR does not reveal any obvious biochemical function. RsbR, its paralogues, and other regulators of sigma(B), including RsbS and RsbT, form large signaling complexes, called stressosomes. We have determined and present here the crystal structure of the N-terminal domain of RsbR. Unexpectedly, this structure belongs to the globin fold superfamily, but there is no bound cofactor. The globin domain from globin-coupled sensory systems replaces the N-terminal domain of RsbR in some bacteria, indicating a common genetic ancestry for RsbR and the globin family. We suggest that the globin fold has been "recycled" in RsbR and that one more activity can be included in the repertoire of globin functions, namely the ability to bind signaling macromolecules such as RsbT.
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Affiliation(s)
- James W Murray
- Institute for Cell and Molecular Biosciences, Faculty of Medical Sciences, University of Newcastle, Newcastle upon Tyne, UK
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20
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Weber RE, Fago A. Functional adaptation and its molecular basis in vertebrate hemoglobins, neuroglobins and cytoglobins. Respir Physiol Neurobiol 2005; 144:141-59. [PMID: 15556098 DOI: 10.1016/j.resp.2004.04.018] [Citation(s) in RCA: 108] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/14/2004] [Indexed: 11/17/2022]
Abstract
Hemoglobin (Hb), the paradigm for allosteric proteins through decades, has gained renaissance in recent years following discovery of globins or their genes in all living organisms and in all tissues of higher animals, and of new members of the globin family, such as neuroglobins, Ngb, found predominantly in neural and nerve tissues and cytoglobins, Cygb, that has unprecedented nuclear location. The recent progresses in this field have been prompted by the development of sophisticated techniques to probe molecular structure and functions, which have revealed novel functions, such as the scavenging and release of vasoactive nitric oxide and the regulation of cellular metabolism. This review deals with the functional adaptations and the underlying molecular mechanisms in globins and presents case examples of molecular adaptations encountered in vertebrates and agnathans.
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Affiliation(s)
- Roy E Weber
- Department of Zoophysiology, Institute of Biological Sciences, University of Aarhus, C.F. Møllers Alle 131, DK-8000 Aarhus C, Denmark.
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