CP43-like chlorophyll binding proteins: structural and evolutionary implications.
CP43, encoded by the psbC gene, is a chlorophyll (Chl)-binding protein of Photosystem II (PSII), the water-splitting and oxygen-evolving enzyme of photosynthesis. CP47, encoded by psbB, a Chl-binding protein of PSII, is closely related to CP43. The Chl-binding six transmembrane helical unit typified by CP43, is also structurally related to the N-terminal domains of the PsaA and PsaB proteins of Photosystem I (PSI) as well as to the family of light-harvesting proteins encoded by cyanobacterial isiA genes and prochlorophyte pcb genes. Here we use recent structural information derived for PSII and PSI to review similarities and differences between the various members of the CP43-like class of light-harvesting proteins, exploring both functional and evolutionary implications.
Division of Molecular Biosciences, South Kensington Campus, Imperial College London, SW7 2AZ, UK.
James W
JW
Murray
James
J
Duncan
James
J
Barber
D001426:Bacterial Proteins / Q000737:chemistry / Q000235:genetics; D018360:Crystallography, X-Ray; D019143:Evolution, Molecular; D045342:Light-Harvesting Protein Complexes / Q000737:chemistry* / Q000235:genetics; D008958:Models, Molecular; D045322:Photosynthetic Reaction Center Complex Proteins / Q000737:chemistry* / Q000235:genetics*; D045331:Photosystem I Protein Complex / Q000737:chemistry / Q000235:genetics; D045332:Photosystem II Protein Complex / Q000737:chemistry* / Q000235:genetics*; D010802:Phylogeny
D001426:Bacterial Proteins; D045342:Light-Harvesting Protein Complexes; D045322:Photosynthetic Reaction Center Complex Proteins; D045331:Photosystem I Protein Complex; D045332:Photosystem II Protein Complex; C083100:photosystem II, chlorophyll binding protein, CP-43; C070970:photosystem II, chlorophyll-binding protein, CP-47; C076726:chlorophyll A binding protein CP43, Cyanobacteria