hyperdiversity of genes encoding integral light-harvesting proteins in the dinoflagellate symbiodinium sphyperdiversity积分聚光蛋白基因编码的腰鞭毛虫symbiodinium sp.pdfVIP

Hyperdiversity of Genes Encoding Integral Light- Harvesting Proteins in the Dinoflagellate Symbiodinium sp 1,2 2 1,2,3 Lynda Boldt , David Yellowlees , William Leggat * 1 School of Pharmacy and Molecular Sciences, James Cook University, Townsville, Queensland, Australia, 2 ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Queensland, Australia, 3 Comparative Genomics Centre, James Cook University, Townsville, Queensland, Australia 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 c2-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. Citation: Boldt L, Yellowlees D, Leggat W (2012) Hyperdiversity of Genes Encoding Integral Light-Harvesting Proteins in the Dinoflagellate Symbiodinium sp. PLoS ONE 7(10): e47456. doi:10.1371/journal.pone.0047456 Editor: Andrew