Cytochrome c biogenesis: the Ccm system.
Cytochrome c biogenesis: the Ccm system.
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DOI:
10.1016/j.tim.2010.03.006
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发表时间:
2010-06
影响因子:
15.9
通讯作者:
Daldal F
中科院分区:
文献类型:
--
作者:
Sanders C;Turkarslan S;Lee DW;Daldal F
Cytochromes of c-type contain covalently attached hemes that are formed via thioether bonds between the vinyls of heme b and cysteines of the C1XXC2H motifs of apocytochromes. In various organisms, this post-translational modification relies on membrane-associated specific biogenesis proteins, referred to as cytochrome c maturation systems. A highly complex version of these systems, Ccm or System I, is found in Gram-negative bacteria, archaea and plant mitochondria. Here, we describe emerging functional interactions between the Ccm components categorized into three conserved modules, and present a mechanistic view of the molecular basis of ubiquitous vinyl-2~Cys1 and vinyl-4~Cys2 heme b-apocytochrome c thioether bonds in c-type cytochromes.
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