Photosystem II light-harvesting protein
Photosystem II light-harvesting proteins are the intrinsic transmembrane proteins CP43 (PsbC) and CP47 (PsbB) occurring in the reaction centre of photosystem II (PSII). These polypeptides bind to chlorophyll a and β-Carotene and pass the excitation energy on to the reaction centre.
Source: Wikipedia — Photosystem II light-harvesting protein (CC BY-SA 4.0)