Cryo-EM structure of the photosynthetic alternative complex III from Chloroflexus aurantiacus at 3.3 angstrom

2026-08-12 REL PDBc INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY STRUCTURE_SUMMARY citation em_admin pdbx_entry_details pdbx_modification_feature pdbx_validate_close_contact struct_conn _citation.journal_volume _citation.page_first _citation.page_last _citation.title _em_admin.last_update _pdbx_entry_details.has_protein_modification EXPERIMENTAL_SUMMARY citation em_admin _citation.journal_volume _citation.page_first _citation.page_last _citation.title _em_admin.last_update STRUCTURE_SUMMARY atom_site chem_comp chem_comp_atom chem_comp_bond em_admin em_software entity pdbx_entity_nonpoly pdbx_modification_feature pdbx_nonpoly_scheme pdbx_struct_conn_angle pdbx_validate_close_contact struct_conn _atom_site.Cartn_x _atom_site.Cartn_y _atom_site.Cartn_z _atom_site.auth_atom_id _atom_site.auth_comp_id _atom_site.label_atom_id _atom_site.label_comp_id _atom_site.type_symbol _chem_comp.formula _chem_comp.formula_weight _chem_comp.id _chem_comp.name _chem_comp.pdbx_synonyms _em_admin.last_update _em_software.name _entity.formula_weight _entity.pdbx_description _pdbx_entity_nonpoly.comp_id _pdbx_entity_nonpoly.name _pdbx_modification_feature.auth_comp_id _pdbx_modification_feature.label_comp_id _pdbx_modification_feature.ref_comp_id _pdbx_nonpoly_scheme.mon_id _pdbx_nonpoly_scheme.pdb_mon_id _pdbx_struct_conn_angle.ptnr1_auth_comp_id _pdbx_struct_conn_angle.ptnr1_label_comp_id _pdbx_struct_conn_angle.ptnr2_auth_comp_id _pdbx_struct_conn_angle.ptnr2_label_comp_id _pdbx_struct_conn_angle.ptnr3_auth_comp_id _pdbx_struct_conn_angle.ptnr3_label_comp_id _pdbx_validate_close_contact.auth_comp_id_2 _struct_conn.ptnr2_auth_comp_id _struct_conn.ptnr2_label_comp_id STRUCTURE_SUMMARY em_admin em_software entity _chem_comp.name _chem_comp.pdbx_synonyms _em_admin.last_update _em_software.name _entity.formula_weight _entity.pdbx_description REMEDIATION REPOSITORY Metalloprotein remediation STRUCTURE_SUMMARY chem_comp chem_comp_atom chem_comp_bond em_admin entity pdbx_modification_feature pdbx_nonpoly_atom_coordination pdbx_nonpoly_atom_coordination_sphere pdbx_nonpoly_atom_coordination_sphere_order pdbx_validate_chiral pdbx_validate_close_contact struct_conn _chem_comp.formula _chem_comp.formula_weight _em_admin.last_update _entity.formula_weight STRUCTURE_SUMMARY em_admin entity _em_admin.last_update _entity.formula_weight PDBj PDBc 2023-08-01 2024-03-06 2024-03-06 2026-08-12 National Natural Science Foundation of China (NSFC) China Cryo-EM structure of the photosynthetic alternative complex III from Chloroflexus aurantiacus at 3.3 angstrom Xu X Photosynthetic alternative complex III, MEMBRANE PROTEIN Xin J Min Z Yu L Yuan X Liu A Wu W Zhang X He H Wu J Xin Y Blankenship RE Tian C Xu X Cryo-EM structure of HQNO-bound alternative complex III from the anoxygenic phototrophic bacterium Chloroflexus aurantiacus. Plant Cell US 36 4212 4233 2024 38299372 doi:10.1093/plcell/koae029 1532-298X 2109 PLCEEW 8k9e FULLOVERLAP EMDB EMD-36984 associated EM volume

Alternative complex III Alternative complex III 0 1 2 3 4 5 6 7 8 Chloroflexus aurantiacus (strain ATCC 29366 / DSM 635 / J-10-fl) Cytochrome c7-like domain-containing protein Chloroflexus aurantiacus (strain ATCC 29366 / DSM 635 / J-10-fl) 0.025247039 1 LEVO MAQIFPRNANLLSRLSIFALVLLVVEGILILGVYFRSNYFRQVNVAIEQPVAFSHQLHVNVVGIDCRYCHTSVDQSYFAN IPATETCMTCHSQIKTYSPLLEKVRESYATGKPIEWVKVYDLPNFVYFNHSIHVNKGIGCSTCHGQVNNMPVVWQQQALY MGWCLNCHRNPELYVRPREEVYNMDYVPPSNQLEIGRQLVAEYGIMPPDQLTNCYVCHR A9WEV2 Fe-S-cluster-containing hydrogenase components 1-like protein Chloroflexus aurantiacus (strain ATCC 29366 / DSM 635 / J-10-fl) 0.11311535899999998 1 LEVO MTQQQPDLEAIRAQLRDARGPQFWRSLDQLADAPAFRELIEREFPRGASELEDGISRRTFLKLMGASLALAGVTACTYQP RQYIAPFDRQPEGRVPGIPQYFASTLTLGGYGTGVLVRSNEGRPTKVEGNPRHPASLGGTDLFAQAEILTMYDPDRSTTV LRQGVPSTWAEFTTTLGNALTAARATQGAGVRLLTTTITSPSLAAQIEQFLQAYPQARWYQYEPINRDNVVAGARLAFGR DVTTRYDLSAAQVVVSLDADFLAPGPGFVAYARAFAERRKVRKDSTTMNRLYVVEASPSTTGTAADHRLPLRADAIAAFT GALANELGVGGAPATLSPKAEEFLRAIARDLEEHRGQSVVIAGDQQPPIVHALAHLINAELGNVGQTVFYHEPVEARPTN QTEELVALVSEMAAGRVETLIMIGGNPVYNAPGDLRFADRMASVPLTIHLSQFVDETSARATWHIPQAHPLESWGDARAF DGTASIVQPLIEPLYGGKTANELLAAMLGQPEAESYDLVRSFWLEQIGETGWQVALANGVIAETVAPVIEPTLNEGAIRA TPIPQPGDGVEIVFRPDPSLFDGFYANNGWLQELPRPLTKLVWDNAALMSPRTAIKLLGLPFNADRLIGTEADDRERQQY LEQLSKVNGTIARIEYRGGIIEIPIWLLPGHAEDSITLNLGYGRTHAGRVGNNVGIDVYPIRTSDSPWFGAGARVTNTGR TYLLVSTQDHWTLEGRDIYRVGEFKKFKEDPKYIAKEVYQEEYGRETPNYQSLQPGDDYTGRNAWGMTINLNACIGCNAC VVACQAENNIAVVGKDQVSRGREMHWIRIDRYFAGEDLDNPSIYMMPVNCMQCEKAPCEVVCPVAATVHDYEGLNNMVYN RCVGTKYCSNNCPYKVRRFNFLQYSDTTTETFKLAFNPDVTVRIRGVMEKCTYCVQRISGARIAAKRAAVQAGQSSYVIS DGAIQTACEQACPTGAIVFGDINDSNSRVAKWKAEGHNYGLLGFLNTVPRTTYLARVRNPSEELEKVEG A9WEV3 Polysulphide reductase NrfD Chloroflexus aurantiacus (strain ATCC 29366 / DSM 635 / J-10-fl) 0.05522351999999999 1 LEVO MAQAQPLRTRPQDDGEAYLLPGETYTSISAKIGDVPLTPPLKTPKGWLAGFSVAFFMLMIFFVSVTWLFIRGVGIWGINI PVGWGMDIINFVWWIGIGHAGTLISAILLLLNQGWRNSINRFAEAMTLFAVACAGLYPILHLGRPWLFYWLIPYPNTHGM WPQFRSALAWDVFAISTYATVSLVFWLVGLIPDFATLRDRAKNIWVKRLYGIAALGWRGSARHWHRYEMASILLAGLSTP LVVSVHSIISLDFAISQVPGWQVTVFPPYFVAGAVFAGFAMVLLLMIPVRTFYGFENYITLHHLDVMAKVMLTTGMIVVY GYFMEVFASLYSGNEFEEYLLYNRLFGPSSWAYWGLLFCNAVAIQPLWFKKVRQNIPALLIISLIVSVGMWLERYVIIVI SLERDFLPSSWDIYIPTIWDWSLYIGTFGLFFTLLFLFIRVLPMINIFEMRLFLYQETEKAKQRAGHGAHGHGHEQSPAH GAATAD A9WEV4 Quinol:cytochrome c oxidoreductase membrane protein Chloroflexus aurantiacus (strain ATCC 29366 / DSM 635 / J-10-fl) 0.019648569999999997 1 LEVO MRNDVYGVMAEFPTPEALIEATRKAKAAGYTKMDAFSPFPIEEVIEEIAHGDTGVPRLVLLFGLIGAASGFILQYIGNLV DYPLNVGGRPLDITNWPAMIPITFESGILLASFAAAIGMIVLNGLPSPYHPVFNVPRFQYASQDAFFLCIEATDPLFDRS RTSQFLRSLNPMQVSEVAY A9WEV5 Cytochrome c domain-containing protein Chloroflexus aurantiacus (strain ATCC 29366 / DSM 635 / J-10-fl) 0.023017015999999998 1 LEVO MQKPRLTSRMIRFGWVGLLVLLLTACHQDMYDQQKYTTYEPSSFFADGRSSRPNVPGTTPFEVVKTDEFLYTGLIDGQEV DAMPFPVTKDLLLRGQLKYNIYCAVCHGEAGYGASMVAERGGIVPANFHQQRLREAPLSHFFVVITNGVYRGDPENGGYQ SMYGYASRITPEDRWAIAAYIRALQLSQNATIDDVPPDQRAQLGN A9WEV6 Quinol:cytochrome c oxidoreductase quinone-binding subunit 2 Chloroflexus aurantiacus (strain ATCC 29366 / DSM 635 / J-10-fl) 0.045721672 1 LEVO MATTSISQTRIPQLGQVQMLGLAAAVIGIGVLAAGYFLSPTSFFESYIYGYYVAMTIPLGCLGFLMVQHLTGGAWGVTVR RMLEAGAATLPIMGLLFIPIALGYFDTYKALGLEHPLYEWANPEVVTPGGAEFDPIIAHKVPWLSPLWVTARIAIFFIIW SALALTLRAWSRQQDAGGDAKKLATRMRRLSGIGVALFVITVTFFSFDVAMSLDPHWFSTIYGAHYMANAGLMTLAFLAL MMSRVRDAALFREYVSVKPIHDIGKLIFAFTVLWTYMSYGQLVIIWSGDVAEFTPWYVHRTQHGWVFVALALMLFAFALP FFVLLFRGTKRNLNTLATIAGWIVVMRFVDMAWIILPEFREHLWDIAITDVAAPIGLIGLVIALFAANVQQAPLLPLRDP NMEQLQNSGHH A9WEV7 Uncharacterized protein Chloroflexus aurantiacus (strain ATCC 29366 / DSM 635 / J-10-fl) 0.012485551 1 LEVO MSYRPNYSASRYTAGRPAQPVRTARTMAEPSLSRLMIAGLMVFLVLSLVVLLAGRLPFTPQPAPVTGNTYRTYVNDARTL LNSYGYTMEGKVHIPIDRAMDLIVERGLPVRE A9WEV8 unknown Chloroflexus aurantiacus (strain ATCC 29366 / DSM 635 / J-10-fl) 0.004322134 1 LEVO MQPEWSGDPEVKPVFLAVTLTGMVAFLLMVWLFAFYW HEME C 0.0006205189999999999 6 HEC IRON/SULFUR CLUSTER 0.00035163999999999996 3 SF4 FE3-S4 CLUSTER 0.000295795 1 F3S [(2S)-2-octadecanoyloxypropyl] octadecanoate 0.000609018 2 EL6 [(2~{R})-3-[2-azanylethoxy(oxidanyl)phosphoryl]oxy-2-tetradecanoyloxy-propyl] hexadecanoate 0.0006639059999999999 1 JLQ [(2~{R})-3-[2-azanylethoxy(oxidanyl)phosphoryl]oxy-2-pentadecanoyloxy-propyl] pentadecanoate 0.0006639059999999999 1 JL3 1,3-bis(13-methyltetradecanoyloxy)propan-2-yl pentadecanoate 0.0007652399999999999 1 JM9 singleParticle particle 8.0 ETHANE FEI TITAN KRIOS FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 300 1.8 2.3000000000000003 GATAN K2 SUMMIT (4k x 4k) 60.0 1 PHASE FLIPPING AND AMPLITUDE CORRECTION 6LOD 3.33 FSC 0.143 CUT-OFF 425867 PROJECTION MATCHING PROJECTION MATCHING emd_36984.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 200 200 200 0 0 0 200 200 200 209.99998 209.99998 209.99998 90.0 90.0 90.0 X Y Z 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