1.8 A resolution structure of the Photosystem I assembly intermediate lacking stromal subunits.

2026-08-12 REL PDBj INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY DATABASE_REFERENCES citation citation_author em_admin _citation.country _citation.journal_abbrev _citation.journal_id_CSD _citation.journal_id_ISSN _citation.journal_volume _citation.page_first _citation.page_last _citation.pdbx_database_id_DOI _citation.pdbx_database_id_PubMed _citation.title _citation.year _em_admin.last_update EXPERIMENTAL_SUMMARY citation citation_author em_admin _citation.country _citation.journal_abbrev _citation.journal_id_CSD _citation.journal_id_ISSN _citation.journal_volume _citation.page_first _citation.page_last _citation.pdbx_database_id_DOI _citation.pdbx_database_id_PubMed _citation.title _citation.year _em_admin.last_update 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 pdbx_validate_close_contact struct_conn _chem_comp.formula _chem_comp_atom.pdbx_stereo_config _em_admin.last_update EXPERIMENTAL_SUMMARY em_admin _em_admin.last_update PDBj PDBj 2024-06-12 2025-06-18 2025-06-18 2026-08-12 Grant Agency of the Czech Republic 24-10227S Czech Republic European Research Council (ERC) 854126 European Union 1.8 A resolution structure of the Photosystem I assembly intermediate lacking stromal subunits. Naschberger A Komenda J PSI, assembly intermediates, photosystem I, biochemistry, cryo-EM, photosystem biogenesis., PHOTOSYNTHESIS Charras Ferroussier Q Gupta S Tichy M Al-Amoudi A Lukes M Stipl D Konik P Bina D Zakopcanik M Novak P Sobotka R Komenda J Naschberger A High-resolution structural analysis of the cyanobacterial photosystem I complex reveals independent incorporation of small transmembrane and cytoplasmic subunits. Plant Commun. US 6 101493 101493 2025 40859630 doi:10.1016/j.xplc.2025.101493 2590-3462 8zwb FULLOVERLAP EMDB EMD-60522 associated EM volume

Assembly Intermediate of Photosystem I lacking the cytosolic subunits PsaC, PsaD, and PsaE and the transmembrane subunit PsaL. Assembly Intermediate of Photosystem I lacking the cytosolic subunits PsaC, PsaD, and PsaE and the transmembrane subunit PsaL. 0 1 2 3 4 5 6 7 Synechocystis Photosystem I P700 chlorophyll a apoprotein A1 Synechocystis 0.083036398 1 LEVO MTISPPEREAKAKVSVDNNPVPTSFEKWGKPGHFDRTLARGPKTTTWIWNLHANAHDFDSQTSDLEDVSRKIFSAHFGHL AVVFVWLSGMYFHGAKFSNYEGWLADPTHIKPSAQVVWPIVGQGILNGDVGGGFHGIQITSGLFYLWRASGFTDSYQLYC TAIGGLVMAALMLFAGWFHYHVKAPKLEWFQNVESMMNHHLAGLLGLGSLGWAGHQIHVSMPINKLLDAGVAPKDIPLPH EFILEPSKMAELYPSFAQGLTPFFTLNWGVYSDFLTFKGGLNPVTGGLWLSDTAHHHLAIAVLFIIAGHMYRTNWGIGHS MKEILEAHKGPFTGEGHKGLYEILTTSWHAQLAINLALLGSLTIIVAQHMYAMPPYPYQAIDYATQLSLFTHHMWIGGFL IVGAGAHGAIFMVRDYDPAKNVNNLLDRMLRHRDAIISHLNWVCIFLGFHSFGLYIHNDTMRALGRPQDMFSDTAIQLQP IFAQWVQHLHTLAPGATAPNALATASYAFGGETIAVAGKVAMMPITLGTADFMVHHIHAFTIHVTALILLKGVLYARSSR LVPDKANLGFRFPCDGPGRGGTCQVSGWDHVFLGLFWMYNSLSIVIFHFSWKMQSDVWGTVSPDGSVTHVTLGNFAQSAI TINGWLRDFLWAQAANVINSYGSALSAYGIMFLAGHFVFAFSLMFLFSGRGYWQELIESIVWAHNKLNVAPAIQPRALSI IQGRAVGVAHYLLGGIVTTWAFFLARSLSIG P29254 1.97.1.12 Photosystem I P700 chlorophyll a apoprotein A2 Synechocystis 0.081369531 1 LEVO MATKFPKFSQDLAQDPTTRRIWYGIATAHDFETHDGMTEENLYQKIFASHFGHIAIIFLWTSGTLFHVAWQGNFEQWIKD PLNIRPIAHAIWDPHFGEGAVNAFTQAGASNPVNIAYSGVYHWFYTIGMTTNQELYSGAVFLLVLASLFLFAGWLHLQPK FRPSLAWFKNAESRLNHHLAGLFGVSSLAWAGHLVHVAIPEARGQHVGWDNFLSTPPHPAGLMPFFTGNWGVYAADPDTA GHIFGTSEGAGTAILTFLGGFHPQTESLWLTDIAHHHLAIAVIFIIAGHMYRTNWGIGHSIKEILNAHKGPLTGAGHTNL YDTINNSLHFQLGLALASLGVITSLVAQHMYSLPSYAFIAQDHTTQAALYTHHQYIAGFLMVGAFAHGAIFFVRDYDPVA NKDNVLARMLEHKEALISHLSWVSLFLGFHTLGLYVHNDVVVAFGTPEKQILIEPVFAQWIQATSGKALYGFDVLLSNPD SIASTTGAAWLPGWLDAINSGTNSLFLTIGPGDFLVHHAIALGLHTTALILIKGALDARGSKLMPDKKDFGYSFPCDGPG RGGTCDISAWDAFYLAMFWMLNTLGWLTFYWHWKHLGVWSGNVAQFNENSTYLMGWFRDYLWANSAQLINGYNPYGVNNL SVWAWMFLFGHLVWATGFMFLISWRGYWQELIETIVWAHERTPLANLVRWKDKPVALSIVQARLVGLAHFTVGYVLTYAA FLIASTAGKFG P29255 1.97.1.12 Photosystem I reaction center subunit III Synechocystis 0.018267081999999997 1 LEVO MKHLLALLLAFTLWFNFAPSASADDFANLTPCSENPAYLAKSKNFLNTTNDPNSGKIRAERYASALCGPEGYPHLIVDGR FTHAGDFLIPSILFLYIAGWIGWVGRSYLIEIRESKNPEMQEVVINVPLAIKKMLGGFLWPLAAVGEYTSGKLVMKDSEI PTSPR P29256 Photosystem I reaction center subunit VIII Synechocystis 0.004414148 1 LEVO MDGSYAASYLPWILIPMVGWLFPAVTMGLLFIHIESEGEG Q55330 Photosystem I reaction center subunit IX Synechocystis 0.004535415 1 LEVO MDGLKSFLSTAPVMIMALLTFTAGILIEFNRFYPDLLFHP Q55329 Photosystem I reaction center subunit PsaK 1 Synechocystis 0.008649268 1 LEVO MHSFLLATAVPATLSWSPKVAGVMIACNILAIAFGKLTIKQQNVGTPMPSSNFFGGFGLGAVLGTASFGHILGAGVILGL ANMGVL P72712 Photosystem I reaction center subunit XII Synechocystis 0.003382063 1 LEVO MALSDTQILAALVVALLPAFLAFRLSTELYK P72986 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE 0.00072297 3 LHG CHLOROPHYLL A ISOMER 0.000893489 1 CL0 CHLOROPHYLL A 0.000893489 92 CLA PHYLLOQUINONE 0.000450696 2 PQN BETA-CAROTENE 0.000536873 14 BCR beta,beta-caroten-4-one 0.000550856 5 ECH 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE 0.0007871579999999999 2 LMG DODECYL-BETA-D-MALTOSIDE 0.000510615 26 LMT CHLORIDE ION 3.5453e-05 1 CL IRON/SULFUR CLUSTER 0.00035163999999999996 1 SF4 Zeaxanthin 0.000568871 1 5X6 water 1.8015e-05 355 HOH singleParticle particle 7.5 Quantifoil R1.2/1.3 COPPER GLOW DISCHARGE 60

30mA

ETHANE 100 277.15 FEI VITROBOT MARK IV TFS KRIOS FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 300 0.5 1.9000000000000001 FEI FALCON IV (4k x 4k) 1.0 1 PHASE FLIPPING AND AMPLITUDE CORRECTION 5OY0 1.83 FSC 0.143 CUT-OFF 333941 MAXIMUM LIKELIHOOD MAXIMUM LIKELIHOOD emd_60522.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 350 350 350 0 0 0 350 350 350 255.15 255.15 255.15 90.0 90.0 90.0 X Y Z -0.011908391 0.046950348 -0.0001754514 0.0013484322 0.729 0.729 0.729 0.01 AUTHOR ::::EMDATABANK.org::::EMD-60522:::: emd_60522_msk_1.map emd_60522_additional_1.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 350 350 350 0 0 0 350 350 350 255.15 255.15 255.15 90.0 90.0 90.0 X Y Z -0.057777468 0.15304485 -0.00017553559 0.0039715907 0.729 0.729 0.729 AUTHOR ::::EMDATABANK.org::::EMD-60522:::: emd_60522_half_map_2.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 350 350 350 0 0 0 350 350 350 255.15 255.15 255.15 90.0 90.0 90.0 X Y Z -0.016358864 0.05517331 -0.0001756988 0.0018304512 0.729 0.729 0.729 AUTHOR ::::EMDATABANK.org::::EMD-60522:::: emd_60522_half_map_1.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 350 350 350 0 0 0 350 350 350 255.15 255.15 255.15 90.0 90.0 90.0 X Y Z -0.016513927 0.052548878 -0.000175203 0.0018279165 0.729 0.729 0.729 AUTHOR ::::EMDATABANK.org::::EMD-60522::::