Protein
Iron stress-induced chlorophyll-binding protein
Organism
Synechococcus sp. (strain ATCC 27144 / PCC 6301 / SAUG 1402/1)
Function
Functions as an antenna for photosystem I (PSI) under iron-limiting conditions, when phycobilisomes disappear. In the (PSI)3(Isi3)18 complex most of the harvested energy is probably used by PSI; in other PSI-containing supercomplexes a large part of the energy will probably not be used for light harvesting, but rather is dissipated to protect the organism from light damage.
Similarity
Belongs to the PsbB/PsbC family. IsiA/Pcb subfamily.
Sequence
MQTYNNPEVTYDWWAGNARFANLSGLFIAAHVAQAALIMFWAGAFTLYEISWLTADQSMGEQGLILLPHLATLGLGVGDGGQVTDTYPLFVVGAVHLIASAVLGAGALFHTFRAPSDLAAASGAAKRFHFDWNDPKQLGLILGHHLLFLGVGALLLVAKATTWGGLYDAASQTVRLVTEPTLNPAVIYGYQTHFASIDNLEDLVGGHVYVGVMLIAGGIWHILVPPFQWTKKVLIYSGEAILSYSLGGIALAGFVAAYFCAVNTLAYPVEFYGAPLEIKLGVTPYFADTVQLPFGAHTPRAWLSNAHFFLAFFCLQGHLWHALRAMGFDFRRVEKALSSVEA