Outer-membrane cytochrome-c, OmcF, from Geobacter sulfurreducens : high structural similarity to an algal cytochrone c{sub 6}.
Putative outer membrane c-type cytochromes have been implicated in metal ion reducing properties of Geobacter sulfurreducens. OmcF (GSU2432), OmcB (GSU2731), and OmcC are three such proteins that have predicted lipid anchors. MmcF is a monoheme cytochrome, whereas OmcB and OmcC are multiheme cytochromes. Deletion of OmcF was reported to affect the expression of OmcB and OmcC in G. sulfurreducens. The OmcF deficient strain was impaired in its ability to both reduce and grow on Fe(III) citrate probably because the expression fo OmcB, which is crucial for iron reduction, is low in this strain. U(VI) reduction activity of this bacterium is also lower on deletion of OmcB or OmcF. The U(VI) reduction activity is affected more by the deletion of OmcF than by the deletion of OmcB.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 981313
- Report Number(s):
- ANL/BIO/JA-61667; TRN: US201012%%1297
- Journal Information:
- Proteins: Struct. Function Bioinform., Vol. 74, Issue 1 ; 2009
- Country of Publication:
- United States
- Language:
- ENGLISH
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