2023
Two-Dimensional Electronic Spectroscopy of the Far-Red-Light Photosystem II Reaction Center
Silori Y, Willow R, Nguyen H, Shen G, Song Y, Gisriel C, Brudvig G, Bryant D, Ogilvie J. Two-Dimensional Electronic Spectroscopy of the Far-Red-Light Photosystem II Reaction Center. The Journal Of Physical Chemistry Letters 2023, 14: 10300-10308. PMID: 37943008, DOI: 10.1021/acs.jpclett.3c02604.Peer-Reviewed Original ResearchTwo-dimensional electronic spectroscopyCharge separation mechanismPhotosystem II reaction centerElectronic spectroscopyPrimary charge separationReaction centersSpectral congestionPrimary energy conversionCharge separationVisible lightFar-red lightRadical pairSpectral overlapPrimary electron acceptorConstituent pigmentsFAR-REDSpectroscopyLightEnergy conversionSeparation mechanismElectron acceptorHelical allophycocyanin nanotubes absorb far-red light in a thermophilic cyanobacterium
Gisriel C, Elias E, Shen G, Soulier N, Flesher D, Gunner M, Brudvig G, Croce R, Bryant D. Helical allophycocyanin nanotubes absorb far-red light in a thermophilic cyanobacterium. Science Advances 2023, 9: eadg0251. PMID: 36961897, PMCID: PMC10038336, DOI: 10.1126/sciadv.adg0251.Peer-Reviewed Original ResearchConceptsFar-red lightLight-harvesting proteinsLight-harvesting phycobiliproteinsCryo-electron microscopyStructure-function relationshipsLow-light environmentsAP complexesThermophilic cyanobacteriumLow lightBiological plasticityPhotosystem I.Likely associatesAllophycocyaninParalogsEnhanced abilityCyanobacteriaCyanobacteriumAcclimationSubunitsPhycobiliproteinsProteinResource accessibilityDiversityAssemblesChlorophyll
2022
Structure of a dimeric photosystem II complex from a cyanobacterium acclimated to far-red light
Gisriel C, Shen G, Flesher D, Kurashov V, Golbeck J, Brudvig G, Amin M, Bryant D. Structure of a dimeric photosystem II complex from a cyanobacterium acclimated to far-red light. Journal Of Biological Chemistry 2022, 299: 102815. PMID: 36549647, PMCID: PMC9843442, DOI: 10.1016/j.jbc.2022.102815.Peer-Reviewed Original ResearchConceptsFar-red light photoacclimationChl dFar-red lightPhotosystem IIChl fWater-splitting enzymeEnergy transferDimeric photosystem II complexesCryo-EM structurePhotosystem II complexElectron transfer chainWater oxidationChl f moleculesDimeric complexStructure-function relationshipsPhotosynthetic machineryPsbH subunitProtein environmentMonomeric structureOxygenic photosynthesisVisible lightFormyl moietyF moleculesAccessory pigmentsTransfer chain