Functional Analysis of a Divergent System II Protein, Ccs1, Involved in c-Type Cytochrome Biogenesis* 210
Functional Analysis of a Divergent System II Protein, Ccs1, Involved in c-Type Cytochrome Biogenesis* 210
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参与 c 型细胞色素生物发生的发散系统 II 蛋白 Ccs1 的功能分析* 210
DOI:
--
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发表时间:
2003
影响因子:
4.8
通讯作者:
S. Merchant
中科院分区:
文献类型:
--
作者:
B. W. Dreyfuss;P. Hamel;S. S. Nakamoto;S. Merchant
The Ccs1 gene, encoding a highly divergent novel component of a system II type c-type cytochrome biogenesis pathway, is encoded by the previously definedCCS1 locus in Chlamydomonas reinhardtii. phoA and lacZα bacterial topological reporters were used to deduce a topological model of theSynechocystis sp. 6803 Ccs1 homologue, CcsB. CcsB, and therefore by analogy Ccs1, possesses a large soluble lumenal domain at its C terminus that is tethered in the thylakoid membrane by three closely spaced transmembrane domains in the N-terminal portion of the protein. Molecular analysis of ccs1 alleles reveals that the entire C-terminal soluble domain is essential for Ccs1 function and that a stromal loop appears to be important in vivo, at least for maintenance of Ccs1. Site-directed mutational analysis reveals that a single histidine (His274) within the last transmembrane domain, preceding the large lumenal domain, is required for c-type cytochrome assembly, whereas an invariant cysteine residue (Cys199) is shown to be non-essential. Ccs1 is proposed to interact with other Ccs components based on its reduced accumulation in ccs2,ccs3, ccs4, and ccsAstrains.
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DOI:
10.1016/s0021-9258(19)84657-4
发表时间:
1989-10
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
M. Drygas;A. Lambowitz;F. Nargang
通讯作者:
M. Drygas;A. Lambowitz;F. Nargang
影响因子:
--
作者:
G. Pfeifer;A. Riggs
通讯作者:
G. Pfeifer;A. Riggs
影响因子:
5.6
作者:
Goldman, BS;Beckman, DL;Kranz, RG
通讯作者:
Kranz, RG
影响因子:
11.4
作者:
DUMONT, ME;ERNST, JF;SHERMAN, F
通讯作者:
SHERMAN, F
影响因子:
5.6
作者:
Monika, EM;Goldman, BS;Kranz, RG
通讯作者:
Kranz, RG