Antisense RNA asPcrL regulates expression of photosynthesis genes in Rhodobacter sphaeroides by promoting RNase III-dependent turn-over of puf mRNA.

ABSTRACT: Anoxygenic photosynthesis is an important pathway for Rhodobacter sphaeroides to produce ATP under oxygen-limiting conditions. The expression of its photosynthesis genes is tightly regulated at transcriptional and post-transcriptional levels in response to light and oxygen signals, to avoid photooxidative stress by the simultaneous presence of pigments, light and oxygen. The puf operon encodes pigment-binding proteins of the light-harvesting complex I (genes pufB and pufA), of the reaction centre (genes pufL and pufM), a scaffold protein (gene pufX) and includes the gene for sRNA PcrX. Segmental differences in the stability of the pufBALMX-pcrX mRNA contribute to the stoichiometry of LHI to RC complexes. With asPcrL we identified the

SUBMITTER: Reuscher CM 

PROVIDER: S-EPMC8489922 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature