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IntroductionElectrontransferreactionsarethekeystepsinphoto synthesis ,respirationandmanyotherbiochemicalprocess es.1Cytochromeb5isaredoxproteinexistingwidelyinnature ,whichactsasanelectron carrierduringvariouselectrontransferprocessesinthebiologicalsystem .2Cytochromeb5isamembraneproteinwithmolecularweightofapproximately 16kDa ,ofwhichthehydrophobicC terminaldomainanchorscytochromeb5tothemem brane ,andthehydrophilicN terminaldomaincontainshemeprostheticgroupandexhibitsthebiologicalfunctionsof… 相似文献
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The mutation sites of the four mutants F35Y, P40V, V45E and V45Y of cytochrome b5 are located at the edge of the heme-binding pocket. The solvent accessible areas of the “pocket inte-rior“ of the four mutants and the wild-type cytochrome b5 have been calculated based on their crystal structures at high resolu-tion. The change in the hydrophobicity of the heme-binding pocket resulting from the mutation can be quantitatively de-scribed using the difference of the solvent accessible area of the “pocket interior“ of each mutant from that of the wild-type cy-tochrome b5. The influences of the hydrophobicity of the heme-binding pocket on the protein stability and redox potential are discussed. 相似文献
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IntroductionMicrosomalcytochromeb5(Cytb5)isamemberofcytochromeb5family ,anditservesasanelectroncarrierinaseriesofelectron transferprocessesinbiologicalsys tems .1 3 Cytb5isamembraneproteinwithMr~ 16kDa ,consistingoftwodomains ,onehydrophobicdomainwhichanchorsth… 相似文献
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