{"title":"Effect of cytochrome C oxidase and polyanions on the alkaline transition of ferricytochrome C.","authors":"M Antalík, M Bona, J Bágelová","doi":"","DOIUrl":null,"url":null,"abstract":"<p><p>Application of heparin, polyadenylate, polyglutamate and polygalacturonate resulted in changes in the electron absorption spectrum of cytochrome c that resembled those after cytochrome c oxidase application at neutral pH. The formed complexes of cytochrome c with polyanions retain the bond of Met-80 with heme iron. Cytochrome c oxidase and the polyanions increased the apparent pKa of alkaline transition of cytochrome c by an order of magnitude.</p>","PeriodicalId":8778,"journal":{"name":"Biochemistry international","volume":"28 4","pages":"675-82"},"PeriodicalIF":0.0000,"publicationDate":"1992-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Biochemistry international","FirstCategoryId":"1085","ListUrlMain":"","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Application of heparin, polyadenylate, polyglutamate and polygalacturonate resulted in changes in the electron absorption spectrum of cytochrome c that resembled those after cytochrome c oxidase application at neutral pH. The formed complexes of cytochrome c with polyanions retain the bond of Met-80 with heme iron. Cytochrome c oxidase and the polyanions increased the apparent pKa of alkaline transition of cytochrome c by an order of magnitude.