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Rhodopseudomonas palustris CGA009 has two functional ppsR genes, each of which encodes a repressor of photosynthesis gene expression.

Biochemistry - 5 Dec 2006

Braatsch Stephan, Bernstein Jeffrey R, Lessner Faith, Morgan Jennifer, Liao James C, Harwood Caroline S, Beatty J Thomas

Abstract excerpt

The PpsR protein is a regulator of redox-dependent photosystem development in purple phototrophic bacteria. In contrast to most species, Rhodopseudomonas palustris contains two ppsR genes. We show that the inactivation of each of the R. palustris strain CGA009 ppsR genes results in an elevated level of formation of the photosystem under dark aerobic conditions. Absorption spectra of the two PpsR mutants revealed...

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PMID: 17128983
DOI: 10.1021/bi061074b

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-08.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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