Diurnal rhythms result in significant changes in the cellular protein complement in the cyanobacterium Cyanothece 51142.

ABSTRACT: Cyanothece sp. ATCC 51142 is a diazotrophic cyanobacterium notable for its ability to perform oxygenic photosynthesis and dinitrogen fixation in the same single cell. Previous transcriptional analysis revealed that the existence of these incompatible cellular processes largely depends on tightly synchronized expression programs involving ∼30% of genes in the genome. To expand upon current knowledge, we have utilized sensitive proteomic approaches to examine the impact of diurnal rhythms on the protein complement in Cyanothece 51142. We found that 250 proteins accounting for ∼5% of the predicted ORFs from the Cyanothece 51142 genome and 20% of proteins detected under alternating light/dark conditions exhibited periodic oscillations in their abundances. Our results suggest that altered enzym

SUBMITTER: Stockel J 

PROVIDER: S-EPMC3043056 | biostudies-literature | 2011 Feb

REPOSITORIES: biostudies-literature