Figure 1
From: The photosensor protein Ppr of Rhodocista centenaria is linked to the chemotaxis signalling pathway
Domain structure of the Ppr photosensor protein of R. centenaria . The Ppr protein consists of a photoactive yellow protein domain (Pyp; residues 1-135) which carries the blue light absorbing chromophore p-hydroxycinnamic acid, a central bacteriophytochrome bilin binding domain (residues 136-601) with the red light absorbing biliverdin chromophore, and a histidine kinase domain (Pph; residues 602-884). The truncated Pph protein consists of the histidine kinase domain (residues 602-884). In the mutant Pph H670A the putative autophosphorylated histidine residue (H670) is replaced by an alanine.