Protein
Carotenoid cleavage dioxygenase 8 homolog B, chloroplastic
Organism
Oryza sativa subsp. japonica
Function
Involved in strigolactones biosynthesis by cleaving the C(27) 9-cis-10'-apo-beta-carotenal produced by CCD7. Produces the C(19) carlactone and a C(8) hydroxyaldehyde. Also shows lower activity with all-trans-10'-apo-beta-carotenal producing a C(9) dialdehyde and the C(18) 13-apo-beta-carotenone. Strigolactones are hormones that inhibit tillering and shoot branching through the MAX-dependent pathway, contribute to the regulation of shoot architectural response to phosphate-limiting conditions and function as rhizosphere signal that stimulates hyphal branching of arbuscular mycorrhizal fungi and trigger seed germination of root parasitic weeds.
Similarity
Belongs to the carotenoid oxygenase family.
Sequence
MSPAMLQASSLCVSAALSGAASRPGRLASQGHQGKRAVAQPLAASAVTEAAPPAPVVAPPARPVDAPRRRGGRGGGGGGGELVAWKSVRQERWEGALEVDGELPLWLDGTYLRNGPGLWNLGDYGFRHLFDGYATLVRVSFRGGRAVGAHRQIESEAYKAARAHGKVCYREFSEVPKPDNFLSYVGQLATLFSGSSLTDNSNTGVVMLGDGRVLCLTETIKGSIQVDPDTLDTVGKFQYTDKLGGLIHSAHPIVTDTEFWTLIPDLIRPGYVVARMDAGSNERQFVGRVDCRGGPAPGWVHSFPVTEHYVVVPEMPLRYCAKNLLRAEPTPLYKFEWHLESGSYMHVMCKASGKIVASVEVPPFVTFHFINAYEETDEEGRVTAIIADCCEHNANTAILDKLRLHNLRSSSGQDVLPDARVGRFRIPLDGSQFGELETALDPEEHGRGMDMCSINPAHVGREYRYAYACGARRPCNFPNTLTKVDLVERTAKNWHEEGSVPSEPFFVPRPGATEEDDGVAISMVSAKDGSGYALVLDGKTFEEVARAKFPYGLPYGLHCCWVPRKRNSK