Transcriptional map of respiratory versatility in the hyperthermophilic crenarchaeon Pyrobaculum aerophilum.

ABSTRACT: Hyperthermophilic crenarchaea in the genus Pyrobaculum are notable for respiratory versatility, but relatively little is known about the genetics or regulation of crenarchaeal respiratory pathways. We measured global gene expression in Pyrobaculum aerophilum cultured with oxygen, nitrate, arsenate and ferric iron as terminal electron acceptors to identify transcriptional patterns that differentiate these pathways. We also compared genome sequences for four closely related species with diverse respiratory characteristics (Pyrobaculum arsenaticum, Pyrobaculum calidifontis, Pyrobaculum islandicum, and Thermoproteus neutrophilus) to identify genes associated with different respiratory capabilities. Specific patterns of gene expression in P. aerophilum were associated with aerobic respiration,

SUBMITTER: Cozen AE 

PROVIDER: S-EPMC2632070 | biostudies-literature | 2009 Feb

REPOSITORIES: biostudies-literature