Cryo-EM structure of the tetrameric photosystem I from a heterocyst-forming cyanobacterium Anabaena sp. PCC7120

2026-08-12 REL PDBj INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY EXPERIMENTAL_SUMMARY em_admin _em_admin.last_update NON_POLYMER_DESCRIPTION chem_comp chem_comp_atom chem_comp_bond database_2 pdbx_struct_conn_angle pdbx_validate_chiral struct_conn _chem_comp.formula _database_2.pdbx_DOI _database_2.pdbx_database_accession _pdbx_struct_conn_angle.ptnr1_auth_asym_id _pdbx_struct_conn_angle.ptnr1_auth_comp_id _pdbx_struct_conn_angle.ptnr1_auth_seq_id _pdbx_struct_conn_angle.ptnr1_label_asym_id _pdbx_struct_conn_angle.ptnr1_label_atom_id _pdbx_struct_conn_angle.ptnr1_label_comp_id _pdbx_struct_conn_angle.ptnr1_label_seq_id _pdbx_struct_conn_angle.ptnr2_auth_asym_id _pdbx_struct_conn_angle.ptnr2_auth_comp_id _pdbx_struct_conn_angle.ptnr2_auth_seq_id _pdbx_struct_conn_angle.ptnr2_label_asym_id _pdbx_struct_conn_angle.ptnr2_label_comp_id _pdbx_struct_conn_angle.ptnr3_auth_asym_id _pdbx_struct_conn_angle.ptnr3_auth_comp_id _pdbx_struct_conn_angle.ptnr3_auth_seq_id _pdbx_struct_conn_angle.ptnr3_label_asym_id _pdbx_struct_conn_angle.ptnr3_label_comp_id _pdbx_struct_conn_angle.value _struct_conn.pdbx_dist_value _struct_conn.pdbx_leaving_atom_flag _struct_conn.ptnr1_auth_asym_id _struct_conn.ptnr1_auth_comp_id _struct_conn.ptnr1_auth_seq_id _struct_conn.ptnr1_label_asym_id _struct_conn.ptnr1_label_atom_id _struct_conn.ptnr1_label_comp_id _struct_conn.ptnr1_label_seq_id _struct_conn.ptnr2_auth_asym_id _struct_conn.ptnr2_auth_comp_id _struct_conn.ptnr2_auth_seq_id _struct_conn.ptnr2_label_asym_id _struct_conn.ptnr2_label_atom_id _struct_conn.ptnr2_label_comp_id REMEDIATION REPOSITORY Metalloprotein remediation STRUCTURE_SUMMARY chem_comp chem_comp_atom em_admin pdbx_entry_details pdbx_modification_feature pdbx_nonpoly_atom_coordination pdbx_validate_chiral pdbx_validate_close_contact struct_conn struct_conn_type _chem_comp.formula _chem_comp_atom.pdbx_stereo_config _em_admin.last_update _pdbx_entry_details.has_protein_modification PDBj PDBj 2019-05-31 2019-10-09 2019-10-09 2026-08-12 National Science Foundation (China) Cryo-EM structure of the tetrameric photosystem I from a heterocyst-forming cyanobacterium Anabaena sp. PCC7120 Zheng L Li Y Photosystem I, PSI, PCC7120, PHOTOSYNTHESIS Zheng L Li Y Li X Zhong Q Li N Zhang K Zhang Y Chu H Ma C Li G Zhao J Gao N Structural and functional insights into the tetrameric photosystem I from heterocyst-forming cyanobacteria. Nat.Plants UK 5 1087 1097 2019 31595062 doi:10.1038/s41477-019-0525-6 2055-0278 6k61 FULLOVERLAP EMDB EMD-9918 associated EM volume

Photosystem I complex of cyanobacterium Anabaena sp. PCC 7120 Photosystem I complex of cyanobacterium Anabaena sp. PCC 7120 0 1 2 3 4 5 6 7 8 9 10 11 12 Nostoc sp. PCC 7120 1.3 Photosystem I P700 chlorophyll a apoprotein A1 Nostoc sp. PCC 7120 PCC 7120 0.08328967999999999 2 LEVO MTISPPEREEKKARVIVDKDPVPTSFEKWAQPGHFDRTLARGPKTTTWIWNLHALAHDFDTHTSDLEDISRKIFAAHFGH LAVVTIWLSGMIFHGAKFSNYEAWLSDPLNVRPSAQVVWPIVGQDILNGDVGGGFHGIQITSGLFQVWRGWGITNSFQLY CTAIGGLVLAGLFLFAGWFHYHKRAPKLEWFQNVESMLNHHLQVLLGCGSLGWAGHLIHVSAPINKLMDAGVAVKDIPLP HEFILNKSLLIDLFPGFAAGLTPFFTLNWGQYADFLTFKGGLNPVTGGLWMTDIAHHHLAIAVVFIIAGHQYRTNWGIGH SIKEILENHKGPFTGEGHKGLYENLTTSWHAQLATNLAFLGSLTIIIAHHMYAMPPYPYLATDYATQLCIFTHHIWIGGF LIVGGAAHAAIFMVRDYDPVVNQNNVLDRVIRHRDAIISHLNWVCIFLGFHSFGLYIHNDTMRALGRPQDMFSDTAIQLQ PVFAQWVQNLHTLAPGGTAPNALEPVSYAFGGGVLAVGGKVAMMPIALGTADFLIHHIHAFTIHVTVLILLKGVLFARSS RLIPDKANLGFRFPCDGPGRGGTCQVSGWDHVFLGLFWMYNSLSIVIFHFSWKMQSDVWGTVDAAGNVSHITGGNFAQSA ITINGWLRDFLWAQASQVINSYGSALSAYGLMFLGAHFVWAFSLMFLFSGRGYWQELIESIVWAHNKLKVAPAIQPRALS ITQGRAVGVAHYLLGGIATTWAFFHAHILSVG P58576 1.97.1.12 Photosystem I 4.8 kDa protein Nostoc sp. PCC 7120 PCC 7120 0.004872792 2 LEVO MAKAKISPVANTGAKPPYTFRTGWALLLLAVNFLVAAYYFHIIQ P58566 Photosystem I P700 chlorophyll a apoprotein A2 1 Nostoc sp. PCC 7120 PCC 7120 0.083457016 2 LEVO MATKFPKFSQDLAQDPTTRRIWYAMAMGNDFESHDGMTEENLYQKIFATHFGHLAIIFLWASSLLFHVAWQGNFEQWIKD PLHVRPIAHAIWDPHFGKPAIEAFTQAGANGPVNIAYSGVYHWWYTIGMRTNTELYTGSVFLLLFASLFLFAGWLHLQPK FRPSLAWFKSAESRLNHHLAGLFGVSSLAWAGHLIHVAIPESRGQHVGWDNFLSTAPHPAGLQPFFTGNWGVYAQNPDTA GHIFSTSQGAGTAILTFLGGFHPQTESLWLTDMAHHHLAIAVLFIVAGHMYRTNFGIGHSIKEMMNAKTFFGKPVEGPFN MPHQGIYDTYNNSLHFQLGWHLACLGVVTSWVAQHMYSLPSYAFIAKDYTTQAALYTHHQYIAIFLMVGAFAHGAIFLVR DYDPEQNKGNVLERVLQHKEAIISHLSWVSLFLGFHTLGLYVHNDVVVAFGTPEKQILIEPVFAQFIQAAHGKVLYGLDT LLSNPDSVAYTAYPNYANVWLPGWLDAINSGTNSLFLTIGPGDFLVHHAIALGLHTTTLILVKGALDARGSKLMPDKKDF GYAFPCDGPGRGGTCDISAWDSFYLSLFWALNTVGWVTFYWHWKHLGIWQGNVAQFNENSTYLMGWFRDYLWANSAQLIN GYNPYGVNNLSVWAWMFLFGHLVWATGFMFLISWRGYWQELIETLVWAHERTPIANLVRWKDKPVALSIVQARVVGLAHF TVGYVLTYAAFLIASTAGKFG P58565 1.97.1.12 Photosystem I iron-sulfur center Nostoc sp. PCC 7120 PCC 7120 0.008825206 2 LEVO MSHTVKIYDTCIGCTQCVRACPTDVLEMVPWDGCKAAQVASSPRTEDCVGCKRCETACPTDFLSIRVYLGAETTRSMGLA Y P0A410 1.97.1.12 Photosystem I reaction center subunit II Nostoc sp. PCC 7120 PCC 7120 0.015176239999999999 2 LEVO MAETLSGKTPLFAGSTGGLLTKAVEEEKYAITWTSPKAQVFELPTGGAATMHEGENLLYIARKEYGIALGGQLRKFKITN YKIYRILPSGETTFIHPADGVFPEKVNAGREKVRFNARSIGENPNPSQVKFSGKATYDA P58573 Photosystem I reaction center subunit IV Nostoc sp. PCC 7120 PCC 7120 0.007897051 2 LEVO MVQRGSKVRILRPESYWFQDVGTVASVDQSGIKYPVIVRFDKVNYAGINTNNFAVDELIEVEAPKAKAKK P58575 Photosystem I reaction center subunit III Nostoc sp. PCC 7120 PCC 7120 0.017850567999999997 2 LEVO MRRLFALILVICLSFSFAPPAKALGADLTPCAENPAFQALAKNARNTTADPQSGQKRFERYSQALCGPEGYPHLIVDGRL DRAGDFLIPSILFLYIAGWIGWVGRAYLQAIKKDSDTEQKEIQLDLGIALPIIATGFAWPAAAVKELLSGELTAKDSEIT VSPR P58564 Photosystem I reaction center subunit IX Nostoc sp. PCC 7120 PCC 7120 0.0054994219999999995 2 LEVO MADKADQSSYLIKFISTAPVAATIWLTITAGILIEFNRFFPDLLFHPLP P58568 Photosystem I reaction center subunit PsaK 1 Nostoc sp. PCC 7120 PCC 7120 0.008852457 2 LEVO MLTSTLLAAATTPLEWSPTVGIIMVIANVIAITFGRQTIKYPSAEPALPSAKFFGGFGAPALLATTAFGHILGVGLVLGL HNLGRI P58583 Photosystem I reaction center subunit VIII Nostoc sp. PCC 7120 PCC 7120 0.005066925 2 LEVO MATAFLPSILADASFLSSIFVPVIGWVVPIATFSFLFLYIEREDVA P58560 Photosystem I reaction center subunit XI Nostoc sp. PCC 7120 PCC 7120 0.018130724999999997 2 LEVO MAQAVDASKNLPSDPRNREVVFPAGRDPQWGNLETPVNASPLVKWFINNLPAYRPGLTPFRRGLEVGMAHGYFLFGPFAK LGPLRDAANANLAGLLGAIGLVVLFTLALSLYANSNPPTALASVTVPNPPDAFQSKEGWNNFASAFLIGGIGGAVVAYFL TSNLALIQGLVG P58577 Photosystem I reaction center subunit XII Nostoc sp. PCC 7120 PCC 7120 0.003538204 2 LEVO MSSISDTQVYIALVVALIPGLLAWRLATELYK Q8YNB0 CHLOROPHYLL A ISOMER 0.000893489 2 CL0 CHLOROPHYLL A 0.000893489 188 CLA PHYLLOQUINONE 0.000450696 4 PQN IRON/SULFUR CLUSTER 0.00035163999999999996 6 SF4 BETA-CAROTENE 0.000536873 46 BCR 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE 0.00072297 6 LHG 1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL 0.0007951159999999999 4 SQD 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE 0.0007871579999999999 3 LMG singleParticle helicalArray 6.5 ETHANE 100 FEI VITROBOT MARK IV FEI TITAN KRIOS FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 300 FEI TITAN KRIOS AUTOGRID HOLDER NITROGEN GATAN K2 SUMMIT (4k x 4k) 58.0 1 PHASE FLIPPING AND AMPLITUDE CORRECTION 1JB0 C2 2.37 FSC 0.143 CUT-OFF 71600 NOT APPLICABLE PROJECTION MATCHING emd_9918.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 400 400 400 0 0 0 400 400 400 420.80002 420.80002 420.80002 90.0 90.0 90.0 X Y Z -0.07334861 0.17260951 -0.00004018816 0.007173404 1.052 1.052 1.052 0.019 AUTHOR ::::EMDATABANK.org::::EMD-9918::::