3P282 The variety of pigment complex in oxygenic photosynthetic cyanobacteria, Acaryochloris sp.

Detection of chlorophyll d' and pheophytin a in a chlorophyll d-dominating oxygenic photosynthetic prokaryote Acaryochloris marina.

Rapid TaqMan-based quantification of chlorophyll d-containing cyanobacteria in the genus Acaryochloris.

Reports of the chlorophyll (Chl) d-containing cyanobacterium Acaryochloris have accumulated since its initial discovery in 1996. The majority of this evidence is based on amplification of the gene coding for the 16S rRNA, and due to the wide geographical distribution of these sequences, a global distribution of Acaryochloris species was suggested. Here, we present a rapid, reliable, and cost-ef...

Flavodiiron Proteins in Oxygenic Photosynthetic Organisms: Photoprotection of Photosystem II by Flv2 and Flv4 in Synechocystis sp. PCC 6803

BACKGROUND Flavodiiron proteins (FDPs) comprise a group of modular enzymes that function in oxygen and nitric oxide detoxification in Bacteria and Archaea. The FDPs in cyanobacteria have an extra domain as compared to major prokaryotic enzymes. The physiological role of cyanobacteria FDPs is mostly unknown. Of the four putative flavodiiron proteins (Flv1-4) in the cyanobacterium Synechocystis s...

Mobility of pigment - protein complexes in Cyanobacteria

Phycobilisomes, the light harvesting complexes of cyanobacteria are highly mobile, fluorescent complexes known to diffuse freely on the thylakoid membranes, interacting with the reaction centre complexes to mediate efficient photosynthesis. The primary aim of this project is to establish what processes require this rapid movement of the complexes using a number of genetic, biochemical and micro...

A Novel Potassium Channel in Photosynthetic Cyanobacteria

Elucidation of the structure-function relationship of a small number of prokaryotic ion channels characterized so far greatly contributed to our knowledge on basic mechanisms of ion conduction. We identified a new potassium channel (SynK) in the genome of the cyanobacterium Synechocystis sp. PCC6803, a photosynthetic model organism. SynK, when expressed in a K(+)-uptake-system deficient E. coli...