{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Zhang S"],"funding":["Chinese Academy of Sciences","Chinese Academy of Sciences (CAS)","National Natural Science Foundation of China","National Natural Science Foundation of China (National Science Foundation of China)"],"pagination":["560"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC11088674"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["7(1)"],"pubmed_abstract":["Photosynthetic cryptophytes are eukaryotic algae that utilize membrane-embedded chlorophyll a/c binding proteins (CACs) and lumen-localized phycobiliproteins (PBPs) as their light-harvesting antennae. Cryptophytes go through logarithmic and stationary growth phases, and may adjust their light-harvesting capability according to their particular growth state. How cryptophytes change the type/arrangement of the photosynthetic antenna proteins to regulate their light-harvesting remains unknown. Here we solve four structures of cryptophyte photosystem I (PSI) bound with CACs that show the rearrangement of CACs at different growth phases. We identify a cryptophyte-unique protein, PsaQ, which harbors two chlorophyll molecules. PsaQ specifically binds to the lumenal region of PSI during logarithmi"],"journal":["Communications biology"],"pubmed_title":["Growth phase-dependent reorganization of cryptophyte photosystem I antennae."],"pmcid":["PMC11088674"],"funding_grant_id":["31930064","XDB37020101"],"pubmed_authors":["Si L","An X","Zhang S","Su X","Li M","Zhao X"],"additional_accession":[]},"is_claimable":false,"name":"Growth phase-dependent reorganization of cryptophyte photosystem I antennae.","description":"Photosynthetic cryptophytes are eukaryotic algae that utilize membrane-embedded chlorophyll a/c binding proteins (CACs) and lumen-localized phycobiliproteins (PBPs) as their light-harvesting antennae. Cryptophytes go through logarithmic and stationary growth phases, and may adjust their light-harvesting capability according to their particular growth state. How cryptophytes change the type/arrangement of the photosynthetic antenna proteins to regulate their light-harvesting remains unknown. Here we solve four structures of cryptophyte photosystem I (PSI) bound with CACs that show the rearrangement of CACs at different growth phases. We identify a cryptophyte-unique protein, PsaQ, which harbors two chlorophyll molecules. PsaQ specifically binds to the lumenal region of PSI during logarithmi","dates":{"release":"2024-01-01T00:00:00Z","publication":"2024 May","modification":"2026-06-02T08:17:48.449Z","creation":"2026-05-26T03:07:24.476Z"},"accession":"S-EPMC11088674","cross_references":{"pubmed":["38734819"],"doi":["10.1038/s42003-024-06268-5"]}}