Delta-proteobacterial SAR324 group in hydrothermal plumes on the South Mid-Atlantic Ridge.

ABSTRACT: In the dark ocean, the SAR324 group of Delta-proteobacteria has been associated with a chemolithotrophic lifestyle. However, their electron transport chain for energy generation and information system has not yet been well characterized. In the present study, four SAR324 draft genomes were extracted from metagenomes sampled from hydrothermal plumes in the South Mid-Atlantic Ridge. We describe novel electron transport chain components in the SAR324 group, particularly the alternative complex III, which is involved in energy generation. Moreover, we propose that the C-type cytochrome, for example the C553, may play a novel role in electron transfer, adding to our knowledge regarding the energy generation process in the SAR324 cluster. The central carbon metabolism in the described SAR324 gen

SUBMITTER: Cao H 

PROVIDER: S-EPMC4782131 | biostudies-literature | 2016 Mar

REPOSITORIES: biostudies-literature