Evolution of electron transfer out of the cell: comparative genomics of six Geobacter genomes.

ABSTRACT:

Background

Geobacter species grow by transferring electrons out of the cell--either to Fe(III)-oxides or to man-made substances like energy-harvesting electrodes. Study of Geobacter sulfurreducens has shown that TCA cycle enzymes, inner-membrane respiratory enzymes, and periplasmic and outer-membrane cytochromes are required. Here we present comparative analysis of six Geobacter genomes, including species from the clade that predominates in the subsurface. Conservation of proteins across the genomes was determined to better understand the evolution of Geobacter species and to create a metabolic model applicable to subsurface environments.

Results

The results showed that enzymes for acetate transport and oxidation, and for proton transport across the inner membrane were well

SUBMITTER: Butler JE 

PROVIDER: S-EPMC2825233 | biostudies-literature | 2010 Jan

REPOSITORIES: biostudies-literature