A novel <Emphasis Type="Italic">Geobacteraceae</Emphasis>-specific outer membrane protein J (OmpJ) is essential for electron transport to Fe (III) and Mn (IV) oxides in <Emphasis Type="Italic">Geobacter sulfurreducens</Emphasis> |
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Authors: | Eman?Afkar Email author" target="_blank">Gemma?RegueraEmail author Marianne?Schiffer Derek?R?Lovley |
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Institution: | (1) Department of Microbiology, University of Massachusetts, 01003 Amherst, Massachusetts, USA;(2) Biosciences Division, Argonne National Laboratory, 60439 Argonne, Illinois, USA |
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Abstract: | Background Metal reduction is thought to take place at or near the bacterial outer membrane and, thus, outer membrane proteins in the
model dissimilatory metal-reducing organism Geobacter sulfurreducens are of interest to understand the mechanisms of Fe(III) reduction in the Geobacter species that are the predominant Fe(III) reducers in many environments. Previous studies have implicated periplasmic and
outer membrane cytochromes in electron transfer to metals. Here we show that the most abundant outer membrane protein of G. sulfurreducens, OmpJ, is not a cytochrome yet it is required for metal respiration. |
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