The photosensor protein Ppr of Rhodocista centenaria is linked to the chemotaxis signalling pathway.

ABSTRACT:

Background

Rhodocista centenaria is a phototrophic α-proteobacterium exhibiting a phototactic behaviour visible as colony movement on agar plates directed to red light. As many phototrophic purple bacteria R. centenaria possesses a soluble photoactive yellow protein (Pyp). It exists as a long fusion protein, designated Ppr, consisting of three domains, the Pyp domain, a putative bilin binding domain (Bbd) and a histidine kinase domain (Pph). The Ppr protein is involved in the regulation of polyketide synthesis but it is still unclear, how this is connected to phototaxis and chemotaxis.

Results

To elucidate the possible role of Ppr and Pph in the chemotactic network we studied the interaction with chemotactic proteins in vitro as well as in vivo. Matrix-assisted coelution exp

SUBMITTER: Kreutel S 

PROVIDER: S-EPMC2993699 | biostudies-literature | 2010 Nov

REPOSITORIES: biostudies-literature