Mechanisms involved in Fe(III) respiration by the hyperthermophilic archaeon Ferroglobus placidus.

ABSTRACT: The hyperthermophilic archaeon Ferroglobus placidus can utilize a wide variety of electron donors, including hydrocarbons and aromatic compounds, with Fe(III) serving as an electron acceptor. In Fe(III)-reducing bacteria that have been studied to date, this process is mediated by c-type cytochromes and type IV pili. However, there currently is little information available about how this process is accomplished in archaea. In silico analysis of the F. placidus genome revealed the presence of 30 genes coding for putative c-type cytochrome proteins (more than any other archaeon that has been sequenced to date), five of which contained 10 or more heme-binding motifs. When cell extracts were analyzed by SDS-PAGE followed by heme staining, multiple bands corresponding to c-type cytochromes were

SUBMITTER: Smith JA 

PROVIDER: S-EPMC4375341 | biostudies-literature | 2015 Apr

REPOSITORIES: biostudies-literature