{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Gisriel CJ"],"funding":["U.S. Department of Energy","Dutch Research Council (NWO)","National Institutes of Health","NIGMS NIH HHS","NIH HHS","National Science Foundation"],"pagination":["157-170"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC11614940"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["162(2-3)"],"pubmed_abstract":["Allophycocyanins are phycobiliproteins that absorb red light and transfer the energy to the reaction centers of oxygenic photosynthesis in cyanobacteria and red algae. Recently, it was shown that some allophycocyanins absorb far-red light and that one subset of these allophycocyanins, comprising subunits from the ApcD4 and ApcB3 subfamilies (FRL-AP), form helical nanotubes. The lowest energy absorbance maximum of the oligomeric ApcD4-ApcB3 complexes occurs at 709 nm, which is unlike allophycocyanin (AP; ApcA-ApcB) and allophycocyanin B (AP-B; ApcD-ApcB) trimers that absorb maximally at ~ 650 nm and ~ 670 nm, respectively. The molecular bases of the different spectra of AP variants are presently unclear. To address this, we structurally compared FRL-AP with AP and AP-B, performed spectrosco"],"journal":["Photosynthesis research"],"pubmed_title":["Structural comparison of allophycocyanin variants reveals the molecular basis for their spectral differences."],"pmcid":["PMC11614940"],"funding_grant_id":["MCB-1613022","K99GM140174","DE-FG02-05ER15646","K99 GM140174"],"pubmed_authors":["Croce R","Gisriel CJ","Soulier NT","Elias E","Bryant DA","Shen G","Brudvig GW"],"additional_accession":[]},"is_claimable":false,"name":"Structural comparison of allophycocyanin variants reveals the molecular basis for their spectral differences.","description":"Allophycocyanins are phycobiliproteins that absorb red light and transfer the energy to the reaction centers of oxygenic photosynthesis in cyanobacteria and red algae. Recently, it was shown that some allophycocyanins absorb far-red light and that one subset of these allophycocyanins, comprising subunits from the ApcD4 and ApcB3 subfamilies (FRL-AP), form helical nanotubes. The lowest energy absorbance maximum of the oligomeric ApcD4-ApcB3 complexes occurs at 709 nm, which is unlike allophycocyanin (AP; ApcA-ApcB) and allophycocyanin B (AP-B; ApcD-ApcB) trimers that absorb maximally at ~ 650 nm and ~ 670 nm, respectively. The molecular bases of the different spectra of AP variants are presently unclear. To address this, we structurally compared FRL-AP with AP and AP-B, performed spectrosco","dates":{"release":"2024-01-01T00:00:00Z","publication":"2024 Dec","modification":"2026-06-03T00:36:51.564Z","creation":"2025-04-19T14:38:17.762Z"},"accession":"S-EPMC11614940","cross_references":{"pubmed":["37773575"],"doi":["10.1007/s11120-023-01048-4"]}}