Photosystem II CP47 reaction centre protein (IPR017486)

Short name: PSII_PsbB

Overlapping homologous superfamilies

Family relationships


This entry contains the photosystem II P680 chlorophyll A apoprotein, PsbB.

Photosystem II light-harvesting proteins are the intrinsic transmembrane antenna proteins CP43 (PsbC) and CP47 (PsbB) found in the reaction centre of PSII. These polypeptides bind to chlorophyll a and beta-carotene and pass the excitation energy on to the reaction centre [PMID: 12163077]. This family also includes the iron-stress induced chlorophyll-binding protein CP43 (IsiA), which evolved in cyanobacteria from a PSII protein to cope with light limitations and stress conditions [PMID: 15301529].

GO terms

Biological Process

GO:0015979 photosynthesis
GO:0009772 photosynthetic electron transport in photosystem II

Molecular Function

GO:0016168 chlorophyll binding
GO:0045156 electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activity

Cellular Component

GO:0016020 membrane
GO:0009523 photosystem II

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.