2026-08-12 REL RCSB INITIAL_RELEASE REPOSITORY STRUCTURE_SUMMARY atom_site entity pdbx_entity_instance_feature pdbx_entity_nonpoly pdbx_nonpoly_scheme pdbx_poly_seq_scheme pdbx_struct_assembly_prop pdbx_struct_conn_angle pdbx_unobs_or_zero_occ_atoms pdbx_validate_chiral pdbx_validate_close_contact struct_asym struct_conn struct_site struct_site_gen _atom_site.B_iso_or_equiv _atom_site.Cartn_x _atom_site.Cartn_y _atom_site.Cartn_z _atom_site.auth_asym_id _atom_site.auth_atom_id _atom_site.auth_comp_id _atom_site.auth_seq_id _atom_site.label_asym_id _atom_site.label_atom_id _atom_site.label_comp_id _atom_site.label_entity_id _atom_site.pdbx_formal_charge _atom_site.type_symbol _entity.formula_weight _entity.pdbx_description _entity.pdbx_number_of_molecules _pdbx_entity_nonpoly.comp_id _pdbx_entity_nonpoly.name _pdbx_nonpoly_scheme.auth_mon_id _pdbx_nonpoly_scheme.auth_seq_num _pdbx_nonpoly_scheme.entity_id _pdbx_nonpoly_scheme.mon_id _pdbx_nonpoly_scheme.pdb_mon_id _pdbx_nonpoly_scheme.pdb_seq_num _pdbx_nonpoly_scheme.pdb_strand_id _pdbx_poly_seq_scheme.auth_mon_id _pdbx_unobs_or_zero_occ_atoms.auth_asym_id _pdbx_unobs_or_zero_occ_atoms.auth_atom_id _pdbx_unobs_or_zero_occ_atoms.auth_comp_id _pdbx_unobs_or_zero_occ_atoms.auth_seq_id _pdbx_unobs_or_zero_occ_atoms.label_asym_id _pdbx_unobs_or_zero_occ_atoms.label_atom_id _pdbx_unobs_or_zero_occ_atoms.label_comp_id _pdbx_validate_chiral.auth_asym_id _pdbx_validate_chiral.auth_atom_id _pdbx_validate_chiral.auth_comp_id _pdbx_validate_chiral.auth_seq_id _pdbx_validate_chiral.details _pdbx_validate_close_contact.auth_asym_id_2 _pdbx_validate_close_contact.auth_seq_id_2 _struct_asym.entity_id _struct_site.details _struct_site.pdbx_auth_asym_id _struct_site.pdbx_auth_comp_id _struct_site.pdbx_auth_seq_id _struct_site.pdbx_num_residues STRUCTURE_SUMMARY chem_comp chem_comp_atom chem_comp_bond database_2 em_admin pdbx_entry_details pdbx_modification_feature pdbx_validate_chiral refine _chem_comp.formula _database_2.pdbx_DOI _database_2.pdbx_database_accession _em_admin.last_update _pdbx_entry_details.has_protein_modification _refine.ls_d_res_high _refine.ls_d_res_low REMEDIATION REPOSITORY Metalloprotein remediation STRUCTURE_SUMMARY chem_comp chem_comp_atom em_admin pdbx_modification_feature pdbx_nonpoly_atom_coordination pdbx_nonpoly_atom_coordination_sphere pdbx_nonpoly_atom_coordination_sphere_order pdbx_struct_conn_angle pdbx_validate_chiral struct_conn _chem_comp.formula _chem_comp_atom.pdbx_stereo_config _em_admin.last_update EXPERIMENTAL_SUMMARY em_admin _em_admin.last_update RCSB RCSB 2019-07-02 2019-07-17 2020-02-12 2026-08-12 National Science Foundation (NSF, United States) MCB-1613022 United States National Science Foundation (NSF, United States) 1531991 United States Department of Energy (DOE, United States) DE-SC 0001035 United States National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI) P41-GM103311 United States Gisriel CJ Shen G trimeric alpha helical complex, PHOTOSYNTHESIS Gisriel C Shen G Kurashov V Ho MY Zhang S Williams D Golbeck JH Fromme P Bryant DA Sci Adv US 6 eaay6415 2020 doi:10.1126/sciadv.aay6415 2375-2548 6pnj FULLOVERLAP EMDB EMD-20397 associated EM volume

Structure of Photosystem I Acclimated to Far-red Light

Photosystem I from far-red light-adapted Fischerella thermalis PCC 7521 Photosystem I from far-red light-adapted Fischerella thermalis PCC 7521 0 1 2 3 4 5 6 7 8 9 10 11 12 Fischerella thermalis PCC 7521 Photosystem I P700 chlorophyll a apoprotein A1 Fischerella thermalis PCC 7521 0.087627914 3 LEVO MTLTPEREQEVRVVVDNDPVPTSFQKWSQPGHFDRTLAKGAKTTTWIWNLHANAHDFDTHTSDLEDISRKIFAAHFGHLA VVFIWLSGMYFHGARFSNFEAWMANPTGIKPSAQVVWPIFGQEILNGDMGGGFHGIQITSGLFQMWRAAGFTNTFQLYCT AIGGLVMAALMLFAGWFHYHKRAPKLEWFQNTQSMLNHHLAGLLGLGSLGWTGHLIHVSLPTNKLLDTGVALKDIPLPHE FILNPSLMNKLYPHADWGFVKGVVPFFTLQWGHFTDFLTFKGGLNPVTGGLWLTDVAHHHLAIAVMFIIAGHMYRTNWGI GHSIKEMLDDARTPNMLPFLSFIGPVGHKGLFEVLTTSWHAQLSINLAMLGSLSIIIAHHMYAMPPYPYLATDYGTVVSL FTHHVWIGGFLIVGGAAHAAIYMVRDYDPEQNFNNVLDRVLRHRDAIISHLAWVCQFLGFHSFAMYCHNDTMRAFGRPQD MFSDTGIQLQPVFAQWLQHIHTMTIGNPSLQVAAPLGHAFGGLRNLELTGLGTAAPNLHDPVSYAFGGGVVAVGGKVAMM PITLGTADFLIHHIHAFTIHVTVLVLLKGVLFARSSRLIPDKANLGFRFPCDGPGRGGTCQVSAWDHVFLGLFWMYNSLS MVIFHFFWKMQSDVWGTVGADGVVTHITGGNFATSSITNNGWLRDFLWAQSTQVITSYNTSLSAYGLMFLGGHFIFGFSL MFLFSGRGYWQELIESIVWAHNKLKVAPAIQPRALSIIHGRAVGVAHYLLGGIVTTWAFFLARMTAFG G6FME9 1.97.1.12 Photosystem I P700 chlorophyll a apoprotein A2 Fischerella thermalis PCC 7521 0.083450969 3 LEVO MATKFPKFSQDLANDPTTRRIFYAIATAHDFESHDGMTEENLYQRIFASHFGHLAIIFLWASGILFHVAWQGNFEVWIKD PVHVRPIAHAIWDAQFGPGAIKAFTQAGARNPVDICYSGVYHWWYTIGLRTNTELYVGALFLILLAAVFLFAGWLHLQPR YRPNLGWFKNSEARLNHHLAGLFGVSSLAWAGHLVHVAIPESRGQHVGWDNFLSTPPHPAGLWAFFTGNWGAYAQNPDTA EHVFSTSQGAGTAILTFLGGFHPQTQSLWLTDMAHHHLAIAVVLIIAGHMYRTNWRIGHSIKEMMDSKTFFGRKVEGPFN LPHQGLYETVNNSLHFQLSLALACLGVASSLTAQHMYSMPPYAFIAKDFTTMAALYTHHQYIAGFLMVGAFSHAAIFWIK DYDPEQNKGNVLERVLKHKEAIIAHLSWVSLFLGFHTLGLYVHNDVEVAFGAADKQILIEPVFAQFIQSANGKILYGFHT LLSNPDSIAFTAWPNHANVWLPGWLDAINNGTNSLFLTIGPGDFYVHHAIALGLHVTTLILVKGALDARGSKLMPDKKDF GYAFPCDGPGRGGTCDISAWDASYLAVFWMLNTLGWVTFYWHWKHLSIWQGNVAQFNESSTYLMGWFRDYLWANSAQLIN GYNPYGTNNLAVWAWMFLFGHLAWAVSFMFLITWRGYWQELIETLAWAHEQTPLSFGYWRDKPVALSIVQARLVGLTHFT VGYIATYGAFLIASTASKFGQ A0A2N6KXB6 1.97.1.12 Photosystem I iron-sulfur center Fischerella thermalis PCC 7521 0.008853221 3 LEVO MSHTVKIYDTCIGCTQCVRACPTDVLEMVPWDGCRAGQIASSPRTEDCVGCKRCETACPTDFLSIRVYLGAETTRSMGLA Y G6FW50 1.97.1.12 Photosystem I protein PsaD Fischerella thermalis PCC 7521 0.017776348 3 LEVO MSPSAVLGCRKNVERRFMAETLSGQTPIFGGSTGGLLKKAEVEEKYAITWTSPKEQVFEMPTGGAAIMRQGQNLLYLARK EQCIALGGQLRKFKITDYKIYRIYPNGETVYIHPADGVFPEKVNQGREKVRYNDRRIGQNPSPSKVKFSGIATYDAPNS G6FW99 Photosystem I reaction center subunit IV Fischerella thermalis PCC 7521 0.008070138 3 LEVO MVQRGSKVRILRPESYWFQDVGTVASIEQGGTSRYPVIVRFDKVNYAGVNTNNFAQDELVEVEAPKAKAKKA G6FQU3 Photosystem I reaction center protein PsaF subunit III Fischerella thermalis PCC 7521 0.017788021 3 LEVO MKRIFALILAIFIWFSAVSTALAENTTLVPCYKSPAFVERMKNAPDSYYTTKPLKAYSQLLCGEDGLPRIALDRLSLAVD VAIPIAIFLYTAGFIGWSGRSYLQAIKKQDKAEEKEVFIDVPLFISCMVMALFWPMAVIKELLAGELVAKDEEIPISVR G6FMD3 photosystem I subunit VIII Fischerella thermalis PCC 7521 0.0077359559999999996 3 LEVO MMVDMTQLTGDYAASWLPWIMIPLVFYILPFPVFAILFLWIQKEASEEIKETDNNLAEIGELEVPNS A0A2N6MR25 Photosystem I reaction centre subunit IX / PsaJ Fischerella thermalis PCC 7521 0.005435492 3 LEVO MEARYLFRYLSSAPVVATLALIIISVILIVLNYLFPGLQYGTFFHSLP G6FMD2 photosystem I reaction center subunit PsaK Fischerella thermalis PCC 7521 0.003615425 3 LEVO (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) VAAMAFGHVIGVAIVLGLTNIGK G6FV28 Photosystem I reaction center protein subunit XI Fischerella thermalis PCC 7521 0.018543228999999998 3 LEVO MSNTVDTVDNDIIKPFKGDPCLGNLSTPINDSPLAKAFINNLPAYRKGLTPFMRGLEIGMAHGYFLVGPEVVIGPLRESA HGANLSGLITAIYIAVSACLGISIFAITTFQGNPKGSYSSYSKDSLRPLRTREEWSQLNGGIFLGAMGGAIFAYLLLENF DALDAILRGAVNAS A0A2N6M3Z9 Photosystem I reaction center subunit XII Fischerella thermalis PCC 7521 0.0034711149999999994 3 LEVO MSISDTQVYIALVVALVPGFLAWRLATELYK G6FWT6 Photosystem one PsaX Fischerella thermalis PCC 7521 0.011132814 3 LEVO MPGKESTALPRLHTLPTSLPLATQNHENIFNESGELGHLFGISEEVLKLGVHFMAKADTTADLPVAKSTTAKPPYTFRTA WALLLLAINFIVAAYYFHIIE G6FSH2 CHLOROPHYLL A ISOMER 0.000893489 3 CL0 CHLOROPHYLL A 0.000893489 252 CLA Chlorophyll F 0.0009054569999999999 12 F6C PHYLLOQUINONE 0.000450696 6 PQN IRON/SULFUR CLUSTER 0.00035163999999999996 9 SF4 BETA-CAROTENE 0.000536873 63 BCR 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE 0.00072297 6 LHG 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE 0.0007871579999999999 12 LMG DODECYL-BETA-D-MALTOSIDE 0.000510615 6 LMT CALCIUM ION 4.0078e-05 3 CA singleParticle particle 2 8.0 300.0 C6H13NO5 tricine 50.0 NaCl sodium chloride 0.02 BDDM

unspecified

ETHANE 100 295.15 FEI TITAN KRIOS FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 300 GATAN K2 SUMMIT (4k x 4k) 1.5252 1 Gctf 1.06 NONE C3 3.19 FSC 0.143 CUT-OFF RELION 3.0 178666 MAXIMUM LIKELIHOOD RELION 3.0 MAXIMUM LIKELIHOOD RELION 3.0