title: Hyperdiversity of genes encoding integral light-harvesting proteins in the dinoflagellate Symbiodinium sp.
abstract: The superfamily of light-harvesting complex (LHC) proteins is comprised of proteins with diverse functions in light-harvesting and photoprotection. LHC proteins bind chlorophyll (Chl) and carotenoids and include a family of LHCs that bind Chl a and c. Dinophytes (dinoflagellates) are predominantly Chl c binding algal taxa, bind peridinin or fucoxanthin as the primary carotenoid, and can possess a number of LHC subfamilies. Here we report 11 LHC sequences for the chlorophyll a-chlorophyll c(2)-peridinin protein complex (acpPC) subfamily isolated from Symbiodinium sp. C3, an ecologically important peridinin binding dinoflagellate taxa. Phylogenetic analysis of these proteins suggests the acpPC subfamily forms at least three clades within the Chl a/c binding LHC family; Clade 1 clusters with rhodophyte, cryptophyte and peridinin binding dinoflagellate sequences, Clade 2 with peridinin binding dinoflagellate sequences only and Clades 3 with heterokontophytes, fucoxanthin and peridinin binding dinoflagellate sequences.
authors.affiliation: School of Pharmacy and Molecular Sciences, James Cook University, Townsville, Queensland, Australia.
authors.forename: Lynda
authors.initials: L
authors.lastname: Boldt
authors.forename: David
authors.initials: D
authors.lastname: Yellowlees
authors.forename: William
authors.initials: W
authors.lastname: Leggat
mesh_terms: D000595:Amino Acid Sequence; D002338:Carotenoids / Q000737:chemistry; D002734:Chlorophyll / Q000737:chemistry; D000077194:Chlorophyll A; D004141:Dinoflagellida / Q000737:chemistry / Q000235:genetics*; D017125:Genes, Protozoan; D045342:Light-Harvesting Protein Complexes / Q000737:chemistry / Q000235:genetics*; D008969:Molecular Sequence Data; D010802:Phylogeny; D015800:Protozoan Proteins / Q000737:chemistry / Q000235:genetics*; D016415:Sequence Alignment
chemical_list: D045342:Light-Harvesting Protein Complexes; D015800:Protozoan Proteins; D002734:Chlorophyll; C064041:chlorophyll c; C016040:peridinin; D002338:Carotenoids; D000077194:Chlorophyll A