1
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Swinnen S, de Azambuja F, Parac-Vogt TN. From Nanozymes to Multi-Purpose Nanomaterials: The Potential of Metal-Organic Frameworks for Proteomics Applications. Adv Healthc Mater 2024:e2401547. [PMID: 39246191 DOI: 10.1002/adhm.202401547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2024] [Revised: 08/14/2024] [Indexed: 09/10/2024]
Abstract
Metal-organic frameworks (MOFs) have the potential to revolutionize the biotechnological and medical landscapes due to their easily tunable crystalline porous structure. Herein, the study presents MOFs' potential impact on proteomics, unveiling the diverse roles MOFs can play to boost it. Although MOFs are excellent catalysts in other scientific disciplines, their role as catalysts in proteomics applications remains largely underexplored, despite protein cleavage being of crucial importance in proteomics protocols. Additionally, the study discusses evolving MOF materials that are tailored for proteomics, showcasing their structural diversity and functional advantages compared to other types of materials used for similar applications. MOFs can be developed to seamlessly integrate into proteomics workflows due to their tunable features, contributing to protein separation, peptide enrichment, and ionization for mass spectrometry. This review is meant as a guide to help bridge the gap between material scientists, engineers, and MOF chemists and on the other side researchers in biology or bioinformatics working in proteomics.
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Affiliation(s)
- Siene Swinnen
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven, 3001, Belgium
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2
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Wang Y, Guo M, Xu X. Nanoproteases: Alternatives to Natural Protease for Biotechnological Applications. Chemistry 2024; 30:e202401178. [PMID: 38705854 DOI: 10.1002/chem.202401178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Revised: 04/26/2024] [Accepted: 04/29/2024] [Indexed: 05/07/2024]
Abstract
Some nanomaterials with intrinsic protease-like activity have the advantages of good stability, biosafety, low price, large-scale preparation and unique property of nanomaterials, which are promising alternatives for natural proteases in various applications. An especial term, "nanoprotease", has been coined to stress the intrinsic proteolytic property of these nanomaterials. As a new generation of artificial proteases, they have become a burgeoning field, attracting many researchers to design and synthesize high performance nanoproteases. In this review, we summarize recent progress on all types of nanoproteases with regard of their activity, mechanism and application and introduce a new and effective strategy for engineering high-performance nanoproteases. In addition, we discuss the challenges and opportunities of nanoprotease research in the future.
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Affiliation(s)
- Yaru Wang
- Department of Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Mingxiu Guo
- Department of Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Xiaolong Xu
- Department of Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, 230026, P. R. China
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3
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Quanten T, Savić ND, Parac-Vogt TN. Hydrolysis of Peptide Bonds in Protein Micelles Promoted by a Zirconium(IV)-Substituted Polyoxometalate as an Artificial Protease. Chemistry 2020; 26:11170-11179. [PMID: 32515831 DOI: 10.1002/chem.202001920] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Indexed: 12/22/2022]
Abstract
The development of artificial proteases is challenging, but important for many applications in modern proteomics and biotechnology. The hydrolysis of hydrophobic or unstructured proteins is particularly difficult due to their poor solubility, which often requires the presence of surfactants. Herein, it is shown that a zirconium(IV)-substituted Keggin polyoxometalate (POM), (Et2 NH2 )10 [Zr(α-PW11 O39 )2 ] (1), is able to selectively hydrolyze β-casein, which is an intrinsically unstructured protein at pH 7.4 and 60 °C. Four surfactants (sodium dodecyl sulfate (SDS), N-dodecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate (ZW3-12), 3-[(3-cholamidopropyl)dimethylammonio]-1-propanesulfonate (CHAPS), and polyethylene glycol tert-octylphenyl ether (TX-100)), which differ in the nature of their polar groups, were investigated for their role in influencing the selectivity and efficiency of protein hydrolysis. Under experimental conditions, β-casein forms micellar structures in which the hydrophilic part of the protein is water accessible and able to interact with 1. Identical fragmentation patterns of β-casein in the presence of 1 were observed through SDS poly(acrylamide) gel electrophoresis both in the presence and absence of surfactants, but the rate of hydrolysis varied, depending on the nature of surfactant. Whereas TX-100 surfactant, which has a neutral polar head, caused only a slight decrease in the hydrolysis rate, stronger inhibition was observed in the presence surfactants with charges in their polar heads (CHAPS, ZW3-12, SDS). These results were consistent with those of tryptophan fluorescencequenching studies, which showed that the binding between β-casein and 1 decreased with increasing repulsion between the POM and the polar heads of the surfactants. In all cases, the micellar structure of β-casein was not significantly affected by the presence of POM or surfactants, as indicated by circular dichroism spectroscopy.
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Affiliation(s)
- Thomas Quanten
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Box 2404, 3001, Leuven, Belgium
| | - Nada D Savić
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Box 2404, 3001, Leuven, Belgium
| | - Tatjana N Parac-Vogt
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Box 2404, 3001, Leuven, Belgium
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4
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Koehler CJ, Thiede B. Predominant cleavage of proteins N-terminal to serines and threonines using scandium(III) triflate. J Biol Inorg Chem 2019; 25:61-66. [PMID: 31667593 PMCID: PMC7064626 DOI: 10.1007/s00775-019-01733-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 09/05/2019] [Indexed: 12/24/2022]
Abstract
Abstract Proteolytic digestion prior to LC–MS analysis is a key step for the identification of proteins. Digestion of proteins is typically performed with trypsin, but certain proteins or important protein sequence regions might be missed using this endoproteinase. Only few alternative endoproteinases are available and chemical cleavage of proteins is rarely used. Recently, it has been reported that some metal complexes can act as artificial proteases. In particular, the Lewis acid scandium(III) triflate has been shown to catalyze the cleavage of peptide bonds to serine and threonine residues. Therefore, we investigated if this compound can also be used for the cleavage of proteins. For this purpose, several single proteins, the 20S immune-proteasome (17 proteins), and the Universal Proteomics Standard UPS1 (48 proteins) were analyzed by MALDI–MS and/or LC–MS. A high cleavage specificity N-terminal to serine and threonine residues was observed, but also additional peptides with deviating cleavage specificity were found. Scandium(III) triflate can be a useful tool in protein analysis as no other reagent has been reported yet which showed cleavage specificity within proteins to serines and threonines. Graphic abstract ![]()
Electronic supplementary material The online version of this article (10.1007/s00775-019-01733-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Christian J Koehler
- Department of Biosciences, University of Oslo, P.O. Box 1066, Blindern, 0316, Oslo, Norway
| | - Bernd Thiede
- Department of Biosciences, University of Oslo, P.O. Box 1066, Blindern, 0316, Oslo, Norway.
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5
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Ly HGT, Mihaylov TT, Proost P, Pierloot K, Harvey JN, Parac‐Vogt TN. Chemical Mimics of Aspartate‐Directed Proteases: Predictive and Strictly Specific Hydrolysis of a Globular Protein at Asp−X Sequence Promoted by Polyoxometalate Complexes Rationalized by a Combined Experimental and Theoretical Approach. Chemistry 2019; 25:14370-14381. [DOI: 10.1002/chem.201902675] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 08/13/2019] [Indexed: 11/10/2022]
Affiliation(s)
- Hong Giang T. Ly
- Laboratory of Bioinorganic ChemistryDepartment of ChemistryKU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| | - Tzvetan T. Mihaylov
- Laboratory of Computational Coordination ChemistryDepartment of ChemistryKU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| | - Paul Proost
- Laboratory of Molecular ImmunologyRega InstituteDepartment of Microbiology, Immunology, and TransplantationKU Leuven Herestraat 49 3000 Leuven Belgium
| | - Kristine Pierloot
- Laboratory of Computational Coordination ChemistryDepartment of ChemistryKU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| | - Jeremy N. Harvey
- Laboratory of Computational Coordination ChemistryDepartment of ChemistryKU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| | - Tatjana N. Parac‐Vogt
- Laboratory of Bioinorganic ChemistryDepartment of ChemistryKU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
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6
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Quanten T, De Mayaer T, Shestakova P, Parac-Vogt TN. Selectivity and Reactivity of Zr IV and Ce IV Substituted Keggin Type Polyoxometalates Toward Cytochrome c in Surfactant Solutions. Front Chem 2018; 6:372. [PMID: 30211153 PMCID: PMC6121075 DOI: 10.3389/fchem.2018.00372] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Accepted: 08/02/2018] [Indexed: 12/15/2022] Open
Abstract
In this paper we investigate the effect of three different types of surfactants, on the hydrolysis of Cytochrome c (Cyt c), a predominantly α helical protein containing a heme group, promoted by [Ce(α PW11O39)2]10- (CeK) and [Zr(α PW11O39)2]10- (ZrK) polyoxometalates. In the presence of SDS, Zw3 12, or CHAPS surfactants, which are commonly used for solubilizing hydrophobic proteins, the specificity of CeK or ZrK toward hydrolysis of Cyt c does not change. However, the hydrolysis rate of Cyt c by CeK was increased in the presence of SDS, but decreased in the presence of CHAPS, and was nearly inhibited in the presence of Zw3 12. The Circular dichroism and Tryptophan fluorescence spectroscopy have shown that the structural changes in Cyt c caused by surfactants are similar to those caused by POMs, hence the same specificity in the absence or presence of surfactants was observed. The results also indicate that for Cyt c hydrolysis to occur, large unfolding of the protein is needed in order to accommodate the POMs. While SDS readily unfolds Cyt c, the protein remains largely folded in the presence of CHAPS and Zw3 12. Addition of POMs to Cyt c solutions in CHAPS results in unfolding of the structure allowing the interaction with POMs to occur and results in protein hydrolysis. Zw3 12, however, locks Cyt c in a conformation that resists unfolding upon addition of POM, and therefore results in nearly complete inhibition of protein hydrolysis.
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Affiliation(s)
- Thomas Quanten
- Laboratory of Bio-Inorganic Chemistry, Department of Chemistry, KU Leuven, Leuven, Belgium
| | - Tessa De Mayaer
- Laboratory of Bio-Inorganic Chemistry, Department of Chemistry, KU Leuven, Leuven, Belgium
| | - Pavletta Shestakova
- NMR Centre, Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Tatjana N Parac-Vogt
- Laboratory of Bio-Inorganic Chemistry, Department of Chemistry, KU Leuven, Leuven, Belgium
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7
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Sap A, Vandebroek L, Goovaerts V, Martens E, Proost P, Parac-Vogt TN. Highly Selective and Tunable Protein Hydrolysis by a Polyoxometalate Complex in Surfactant Solutions: A Step toward the Development of Artificial Metalloproteases for Membrane Proteins. ACS OMEGA 2017; 2:2026-2033. [PMID: 30023653 PMCID: PMC6044816 DOI: 10.1021/acsomega.7b00168] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 04/28/2017] [Indexed: 05/17/2023]
Abstract
This study represents the first example of protein hydrolysis at pH = 7.4 and 60 °C by a metal-substituted polyoxometalate (POM) in the presence of a zwitterionic surfactant. Edman degradation results show that in the presence of 0.5% w/v 3-[(3-cholamidopropyl)dimethylammonio]-1-propanesulfonate (CHAPS) detergent, a Zr(IV)-substituted Wells-Dawson-type POM, K15H[Zr(α2-P2W17O61)2]·25H2O (Zr1-WD2), selectively hydrolyzes human serum albumin exclusively at peptide bonds involving Asp or Glu residues, which contain carboxyl groups in their side chains. The selectivity and extent of protein cleavage are tuned by the CHAPS surfactant by an unfolding mechanism that provides POM access to the hydrolyzed peptide bonds.
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Affiliation(s)
- Annelies Sap
- Department
of Chemistry, KU Leuven, Celestijnenlaan 200F, Box 2404, 3001 Leuven, Belgium
| | - Laurens Vandebroek
- Department
of Chemistry, KU Leuven, Celestijnenlaan 200F, Box 2404, 3001 Leuven, Belgium
| | - Vincent Goovaerts
- Department
of Chemistry, KU Leuven, Celestijnenlaan 200F, Box 2404, 3001 Leuven, Belgium
| | - Erik Martens
- Department
of Microbiology and Immunology, KU Leuven, Herestraat 49,
Box 1042, 3000 Leuven, Belgium
| | - Paul Proost
- Department
of Microbiology and Immunology, KU Leuven, Herestraat 49,
Box 1042, 3000 Leuven, Belgium
| | - Tatjana N. Parac-Vogt
- Department
of Chemistry, KU Leuven, Celestijnenlaan 200F, Box 2404, 3001 Leuven, Belgium
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8
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Metal assisted peptide bond hydrolysis: Chemistry, biotechnology and toxicological implications. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2016.02.009] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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9
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Quanten T, Shestakova P, Van Den Bulck D, Kirschhock C, Parac-Vogt TN. Interaction Study and Reactivity of Zr(IV) -Substituted Wells-Dawson Polyoxometalate towards Hydrolysis of Peptide Bonds in Surfactant Solutions. Chemistry 2016; 22:3775-84. [PMID: 26833582 DOI: 10.1002/chem.201503976] [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: 10/05/2015] [Indexed: 11/09/2022]
Abstract
The interaction between the 1:2 Zr(IV) :Wells-Dawson complex, K15 H[Zr(α2 -P2 W17 O61 )2] (1), and a range of surfactants was studied in detail with the aim of developing metal-substituted POMs as potential artificial proteases for membrane proteins. The surfactants include the positively charged cetyl(trimethyl)ammonium bromide (CTAB), the negatively charged sodium dodecyl sulfate (SDS), the neutral Triton X-100 (TX-100), and zwitterionic 3-[dodecyl(dimethyl)ammonio]-1-propanesulfonate (Zw3-13) and 3-[dimethyl(3-{[(3α,5β,7α,12α)-3,7,12-trihydroxy-24-oxocholan-24-yl]amino}propyl)ammonio]-1-propanesulfonate (CHAPS). A combination of multinuclear (1)H, (13)C, and (31) P NMR spectroscopy, (1)H diffusion-ordered NMR spectroscopy ((1)H DOSY), and nuclear Overhauser effect spectroscopy (NOESY) was used to examine the interaction between 1 and each surfactant on the molecular level. Cationic surfactant CTAB caused precipitation of 1 due to strong electrostatic interactions, while the anionic SDS and neutral TX-100 surfactants did not exhibit any interaction at neutral pD. (1)H DOSY NMR spectroscopy indicated an interaction between 1 and zwitterionic surfactants Zw3-12 and CHAPS, which occurs via the positively charged ammonium group in the surfactant molecule. In the presence of anionic, neutral, and zwitterionic surfactants, 1 preserves its catalytic activity towards the hydrolysis of the peptide bond in the dipeptide glycyl-l-histidine (GH). The fastest hydrolysis was observed at pD 7.0 and could be rationalized by taking into account pD-dependent speciation of 1 and coordination properties of GH.
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Affiliation(s)
- Thomas Quanten
- Department Of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001, Leuven, Belgium
| | - Pavletta Shestakova
- NMR Laboratory, Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bontchef Str., B1.9, Sofia, 1113, Bulgaria
| | - Dries Van Den Bulck
- Department Of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001, Leuven, Belgium
| | - Christine Kirschhock
- Centre for Surface Chemistry and Catalysis, KU Leuven, Celestijnenlaan 200F, 3001, Leuven, Belgium
| | - Tatjana N Parac-Vogt
- Department Of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001, Leuven, Belgium.
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10
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Perera-Bobusch C, Hormann J, Weise C, Wedepohl S, Dernedde J, Kulak N. Significantly enhanced proteolytic activity of cyclen complexes by monoalkylation. Dalton Trans 2016; 45:10500-4. [PMID: 27277522 DOI: 10.1039/c6dt00681g] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The activity of Cu(ii) and Co(iii) cyclen complexes in the cleavage of proteins was remarkably improved by introducing long alkyl chains thus generating efficient proteolytic amphiphilic metal complexes.
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Affiliation(s)
| | - Jan Hormann
- Institut für Chemie und Biochemie
- Freie Universität Berlin
- 14195 Berlin
- Germany
| | - Christoph Weise
- Institut für Chemie und Biochemie
- Freie Universität Berlin
- 14195 Berlin
- Germany
| | - Stefanie Wedepohl
- Institut für Chemie und Biochemie
- Freie Universität Berlin
- 14195 Berlin
- Germany
- Charité – Universitätsmedizin Berlin
| | - Jens Dernedde
- Charité – Universitätsmedizin Berlin
- Institut für Laboratoriumsmedizin
- Klinische Chemie und Pathobiochemie
- CVK
- 13353 Berlin
| | - Nora Kulak
- Institut für Chemie und Biochemie
- Freie Universität Berlin
- 14195 Berlin
- Germany
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11
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Darabi F, Hadadzadeh H, Simpson J, Shahpiri A. A water-soluble Pd(ii) complex with a terpyridine ligand: experimental and molecular modeling studies of the interaction with DNA and BSA; and in vitro cytotoxicity investigations against five human cancer cell lines. NEW J CHEM 2016. [DOI: 10.1039/c6nj01880g] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
[Pd(4-OHPh-tpy)Cl]Cl was prepared. The complex interacts with DNA via a combination of covalent, intercalation, and hydrogen bonding interactions.
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Affiliation(s)
- Farivash Darabi
- Department of Chemistry
- Isfahan University of Technology
- Isfahan 84156-83111
- Iran
| | - Hassan Hadadzadeh
- Department of Chemistry
- Isfahan University of Technology
- Isfahan 84156-83111
- Iran
| | - Jim Simpson
- Department of Chemistry
- University of Otago
- Dunedin 9054
- New Zealand
| | - Azar Shahpiri
- Department of Agricultural Biotechnology
- College of Agriculture
- Isfahan University of Technology
- Isfahan 84156-83111
- Iran
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12
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Jityuti B, Buranaprapuk A, Liwporncharoenvong T. Artificial metallopeptidases: Protein cleavage by molybdenum(VI) peroxo α-amino acid complexes. INORG CHEM COMMUN 2015. [DOI: 10.1016/j.inoche.2015.03.037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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Boga Raja UK, Injeti S, Culver T, McCabe JW, Angel LA. Probing the stability of insulin oligomers using electrospray ionization ion mobility mass spectrometry. EUROPEAN JOURNAL OF MASS SPECTROMETRY (CHICHESTER, ENGLAND) 2015; 21:759-774. [PMID: 26764306 DOI: 10.1255/ejms.1396] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The peptide hormone insulin is central to regulating carbohydrate and fat metabolism in the body by controlling blood sugar levels. Insulin's most active form is the monomer and the extent of insulin oligomerization is related to insulin's activity of controlling blood sugar levels. Electrospray ionization (ESI) of human insulin produced a series of oligomers from the monomer to the undecamer identified using quadrupole ion mobility time-of-flight mass spectrometry. Previous research suggested that only the monomer, dimer and hexamer are native forms of insulin in solution and the range of oligomers observed in the gas-phase are ESI artifacts. Here the properties of three distinct oligomer bands I, II and III, where both the charge state and number of insulin units of the oligomer increase incrementally, were investigated. When Zn(ii) was added to the insulin sample the same oligomers were observed but with 0-6 Zn(ii) ions bound to each of the oligomers. The oligomers of bands I, II and III were characterized by comparing their drift times, collision cross- sections, relative intensities, collision-induced dissociation (CID) patterns and relative breakdown energies. Insulin oligomers of band I dissociated primarily by releasing either the 2+ or 3+ monomer accompanied by an oligomer that conserved the mass, charge and Zn(ii) of the precursor. Insulin oligomers of bands II and III dissociated primarily by releasing the 2+ monomer accompanied by an oligomer which conserved the mass, charge and Zn(ii) of the precursor. Comparison of CID patterns and breakdown energies showed all the oligomers in band II required higher collision energies to dissociate than the oligomers in band I, and the oligomers of band III required higher energies to dissociate than oligomers of band II. These results show that the amount of excess charge on the oligomer in respect to the number of insulin monomers in the oligomer affects their stability.
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Affiliation(s)
- Uday Kumar Boga Raja
- Chemistry Department, Texas A&M University - Commerce, P.O. Box 3011, Commerce, TX 75429, USA.
| | - Srilakshmi Injeti
- Chemistry Department, Texas A&M University - Commerce, P.O. Box 3011, Commerce, TX 75429, USA.
| | - Tiffany Culver
- Chemistry Department, Texas A&M University - Commerce, P.O. Box 3011, Commerce, TX 75429, USA.
| | - Jacob W McCabe
- Chemistry Department, Texas A&M University - Commerce, P.O. Box 3011, Commerce, TX 75429, USA.
| | - Laurence A Angel
- Chemistry Department, Texas A&M University - Commerce, P.O. Box 3011, Commerce, TX 75429, USA.
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14
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Sóvágó I, Kállay C, Várnagy K. Peptides as complexing agents: Factors influencing the structure and thermodynamic stability of peptide complexes. Coord Chem Rev 2012. [DOI: 10.1016/j.ccr.2012.02.026] [Citation(s) in RCA: 126] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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15
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Kita Y, Nishii Y, Higuchi T, Mashima K. Zinc-Catalyzed Amide Cleavage and Esterification of β-Hydroxyethylamides. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201201789] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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16
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Kita Y, Nishii Y, Higuchi T, Mashima K. Zinc-Catalyzed Amide Cleavage and Esterification of β-Hydroxyethylamides. Angew Chem Int Ed Engl 2012; 51:5723-6. [DOI: 10.1002/anie.201201789] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2012] [Indexed: 11/05/2022]
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17
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McLaughlin MP, Darrah TH, Holland PL. Palladium(II) and platinum(II) bind strongly to an engineered blue copper protein. Inorg Chem 2011; 50:11294-6. [PMID: 22026434 DOI: 10.1021/ic2017648] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Studies of palladium(II) and platinum(II) binding to well-characterized proteins contribute to understanding the influence of these metals in the environment and body. The well-characterized apoprotein of azurin has a soft-metal binding site that may be exposed to solvent by mutation of a coordinating His-117 residue to glycine (H117G). Palladium(II) and platinum(II) form strong 1:1 adducts with the apo form of H117G azurin. A combination of UV-vis, circular dichroism, and inductively coupled plasma mass spectrometry techniques suggests that the metal binds specifically at His-46 and Cys-112 of the protein.
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Affiliation(s)
- Matthew P McLaughlin
- Department of Chemistry, University of Rochester, Rochester, New York 14618, United States
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