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Generation of the oxidized form protects human brain type creatine kinase against cystine-induced inactivation. Int J Biol Macromol 2011; 48:239-42. [DOI: 10.1016/j.ijbiomac.2010.09.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2010] [Revised: 09/26/2010] [Accepted: 09/27/2010] [Indexed: 11/19/2022]
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Gao YS, Wang Y, Li C, Chen Z, Yan YB, Zhou HM. Dissecting the key residues crucial for the species-specific thermostability of muscle-type creatine kinase. Int J Biol Macromol 2010; 47:366-70. [PMID: 20558199 DOI: 10.1016/j.ijbiomac.2010.06.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2010] [Accepted: 06/06/2010] [Indexed: 10/19/2022]
Abstract
Species-specific protein thermal stability is closely correlated to the living conditions of the organism, especially to its body temperature. In this research, human and zebrafish muscle-type creatine kinases (MMCKs) were taken as model proteins to investigate the molecular adaptation of proteins in poikilothermal and homoiothermal animals. Both the optimal temperature for catalysis and the thermal stability of human MMCK was much higher than those of zebrafish MMCK. Sequence alignment identified 9 amino acid variations conserved in either the teleost MMCKs or the mammal and electric ray MMCKs. Bidirectional mutations were performed to find the residues with beneficial mutations. The results showed that two residues close to the dimer interface of MMCK, the 46th and 146th residue, were crucial for species-specific thermal stability.
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Affiliation(s)
- Yan-Song Gao
- State Key Laboratory of Biomembrane and Membrane Biotechnology, School of Life Sciences, Tsinghua University, Beijing, China
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Sheng Q, Zou HC, Lü ZR, Zou F, Park YD, Yan YB, Yao SJ. Effects of acrylamide on the activity and structure of human brain creatine kinase. Int J Mol Sci 2009; 10:4210-4222. [PMID: 20057941 PMCID: PMC2790104 DOI: 10.3390/ijms10104210] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2009] [Revised: 09/16/2009] [Accepted: 09/24/2009] [Indexed: 12/02/2022] Open
Abstract
Acrylamide is widely used worldwide in industry and it can also be produced by the cooking and processing of foods. It is harmful to human beings, and human brain CK (HBCK) has been proposed to be one of the important targets of acrylamide. In this research, we studied the effects of acrylamide on HBCK activity, structure and the potential binding sites. Compared to CKs from rabbit, HBCK was fully inactivated at several-fold lower concentrations of acrylamide, and exhibited distinct properties upon acrylamide-induced inactivation and structural changes. The binding sites of acrylamide were located at the cleft between the N- and C-terminal domains of CK, and Glu232 was one of the key binding residues. The effects of acrylamide on CK were proposed to be isoenzyme- and species-specific, and the underlying molecular mechanisms were discussed.
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Affiliation(s)
- Qing Sheng
- Department of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou 310027, China
| | - He-Chang Zou
- Yangtze Delta Region Institute of Tsinghua University, Jiaxing 314050, China
- State Key Laboratory of Biomembrane and Membrane Biotechnology, Department of Biological Sciences and Biotechnology, Tsinghua University, Beijing 100084, China
| | - Zhi-Rong Lü
- Department of Environmental Health, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou 510515, China
| | - Fei Zou
- Department of Environmental Health, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou 510515, China
| | - Yong-Doo Park
- Yangtze Delta Region Institute of Tsinghua University, Jiaxing 314050, China
- Department of Environmental Health, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou 510515, China
| | - Yong-Bin Yan
- State Key Laboratory of Biomembrane and Membrane Biotechnology, Department of Biological Sciences and Biotechnology, Tsinghua University, Beijing 100084, China
- Authors to whom correspondence should be addressed; E-Mails:
(Y.-B.Y.);
(S.J.Y.); Tel.: +86-10-62783477 (Y.-B.Y.); +86-571-87951982 (S.J.Y.); Fax: +86-10-62771597 (Y.-B.Y.); +86-571-87951015 (S.J.Y.)
| | - Shan-Jing Yao
- Department of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou 310027, China
- Authors to whom correspondence should be addressed; E-Mails:
(Y.-B.Y.);
(S.J.Y.); Tel.: +86-10-62783477 (Y.-B.Y.); +86-571-87951982 (S.J.Y.); Fax: +86-10-62771597 (Y.-B.Y.); +86-571-87951015 (S.J.Y.)
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Liu YM, Feng S, Ding XL, Kang CF, Yan YB. Mutation of the conserved Asp122 in the linker impedes creatine kinase reactivation and refolding. Int J Biol Macromol 2009; 44:271-7. [PMID: 19263506 DOI: 10.1016/j.ijbiomac.2008.12.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Creatine kinase (CK), a key enzyme in maintaining the intracellular energetic homeostasis, contains two domains connected by a long linker. In this research,we found that the mutations of the conserved Asp122 in the linker slightly affected CK activity, structure and stability. The hydrogen bonding and the ion pair contributed 2-5 kJ/mol to the conformational stability of CK. Interestingly, the ability of CK reactivation from the denatured state was completely removed by the mutations. These results suggested that the electrostatic interactions were crucial to the action of the linker in CK reactivation.
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Affiliation(s)
- Yan-Ming Liu
- Department of Biological Sciences and Biotechnology, Tsinghua University, Beijing, China
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Gráczer É, Varga A, Melnik B, Semisotnov G, Závodszky P, Vas M. Symmetrical Refolding of Protein Domains and Subunits: Example of the Dimeric Two-Domain 3-Isopropylmalate Dehydrogenases. Biochemistry 2009; 48:1123-34. [DOI: 10.1021/bi801857t] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Éva Gráczer
- Institute of Enzymology, Biological Research Center, Hungarian Academy of Sciences, P.O. Box 7, H-1518 Budapest, Hungary, and Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Moscow Region, Russia
| | - Andrea Varga
- Institute of Enzymology, Biological Research Center, Hungarian Academy of Sciences, P.O. Box 7, H-1518 Budapest, Hungary, and Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Moscow Region, Russia
| | - Bogdan Melnik
- Institute of Enzymology, Biological Research Center, Hungarian Academy of Sciences, P.O. Box 7, H-1518 Budapest, Hungary, and Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Moscow Region, Russia
| | - Gennady Semisotnov
- Institute of Enzymology, Biological Research Center, Hungarian Academy of Sciences, P.O. Box 7, H-1518 Budapest, Hungary, and Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Moscow Region, Russia
| | - Péter Závodszky
- Institute of Enzymology, Biological Research Center, Hungarian Academy of Sciences, P.O. Box 7, H-1518 Budapest, Hungary, and Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Moscow Region, Russia
| | - Mária Vas
- Institute of Enzymology, Biological Research Center, Hungarian Academy of Sciences, P.O. Box 7, H-1518 Budapest, Hungary, and Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Moscow Region, Russia
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