Cryo-EM structure of Leishmania tarentolae respiratory complex III (cytochrome bc1 complex)

2026-10-14 REL RCSB INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY DATABASE_REFERENCES citation citation_author em_admin _citation.pdbx_database_id_PubMed _citation.title _em_admin.last_update EXPERIMENTAL_SUMMARY citation citation_author em_admin _citation.pdbx_database_id_PubMed _citation.title _em_admin.last_update RCSB RCSB 2025-11-18 2026-10-07 2026-10-07 2026-10-14 Howard Hughes Medical Institute (HHMI) United States Cryo-EM structure of Leishmania tarentolae respiratory complex III (cytochrome bc1 complex) Liao YT Chao L cytochrome bc1 complex, respiratory complex, complex III, mitochondria, ELECTRON TRANSPORT Solayman M Liao YT Calvo SE Vacas AF Papanastasiou M Rivera KD Mani DR Boyle BW Deng FG Udeshi ND Mootha VK Aphasizheva I Chao LH Aphasizhev R Conserved and divergent mitochondrial assemblies in kinetoplastid parasites. Mol.Cell US 86 4043 2026 42822418 doi:10.1016/j.molcel.2026.08.031 1097-2765 2168 MOCEFL 9z9k FULLOVERLAP EMDB EMD-73948 associated EM volume

Leishmania tarentolae mitochondria complex III Leishmania tarentolae mitochondria complex III 0 1 2 3 4 5 6 7 8 9 10 11 12

Mitochondria were isolated from L. tarentolae promastigotes (UC strain). The mitochondrial pellet was resuspended and solubilized in lysis buffer, and then was incubated on ice for 10 min, followed by centrifuging at 14,000 x g for 10 min. The supernatant was filtered prior to grid preparation.

Leishmania tarentolae Leishmania tarentolae promastigotes (UC strain) Mitochondrial processing peptidase alpha subunit, putative Leishmania tarentolae Leishmania tarentolae promastigotes (UC strain) 0.052705616999999996 2 LEVO PSESVPVAAKKVEITKLHNGARVITHNLGGPSVSVGAYILAGPAYDPPSAPGAGAMMHLALTTSNYNNSLFQLDRNIRSV GAAQSHFEKDKHYIGIRIDARADKWKSAASASSLTQRRQLQNQKQAEQKFSLNLVQDNIFTCIAAPRFHEPDVERFRDTI DNQVEELRWQCPAEYAKQMLETVAFYREPLGNPRFVPASSNGIISSSVLLEQYSRYVVPSRVVIAGVNVDHAELIAEYEN TPFPHSASAPHHAREQPSVPKSKDEAAQYTGGERHDHEDRPKVMGTKPDMDPESIIAVGWLAYGKDKKMVKDHAASMIVK ALMDIQFSGCVRYAHAEVYEHAGLRAFYSPYQTAGLMGFTAKTEPQAAVRMVTDAVKMVQAGKAAVADATLSVAKKMAKM QFMVQNADTIRDYCDYLGTCLSTDSDSVLATSLEEVVDAIDSVSAADVKKVYEKMFSNKASLYGHGEMLCFPSLRQMGL A0A640KGT7 Mitochondrial processing peptide beta subunit, putative Leishmania tarentolae Leishmania tarentolae promastigotes (UC strain) 0.054669586 2 LEVO MSVSFSTLVQRARPASNHATSAAFREVLSKIPPTNVSTLGNGVRVACEENPLSKLATVGVWMDAGTRYEPISYAGTARVL EKCGFLGTTNQSREQIAKAVEELGGQLEVNVGREQTYLYMKVTKENTDRAVGLLADVVRNARMEDADIVKARALVHQDQH LFEERPDDLVMDNLHRCAFDSTPYGVGTPLYGTEEGVKKVTAEQMRSYRASTLAGNRVIVVGSGGVDHTVLEKAAKSYFG DLPTTPEKAAIVMPESRYVGGEYRLWNLRYKTVNVAWAFETCGAACEDNVPLALACEIPGSFHRSQHELGQHAMHRVLKT FSSLDHSTPTNTHFNEKSIETANPFLHSYKDVGLCGMYVVGRQAMGGPGDGGVIVEVLQYTIAEWCRIAQKMLHDNELAQ AKVNMKAQLLFNMDGSANSAKDIGRQVLHYGRRVPLTEMYDRIDDTTASNVQEVLQHYFYGRKPVYSYLGYISAIPNYDW TQHWSYKYWY A0A640KTP0 Ubiquinol-cytochrome c reductase complex 14 kDa protein Leishmania tarentolae Leishmania tarentolae promastigotes (UC strain) 0.023053460999999997 2 LEVO QGIWAGFRYYIGHFFYPNMYREFLSVQNAHKVERALRLQKAIKANKIDYRALLALPVTDHAHPYKMEYPWEKVMQSDARD LGFYGKWYASKMMCFYEGLQFHKWGCLQDDLINAHGWWNRAARTRAPKDKIVHGDRRVMRARVLKDKYIYEPRDRWVHPV DNVAYFGPYVMMVADEWEEKWGFFAGQEVEY A0A640KSC9 Cytochrome b Leishmania tarentolae Leishmania tarentolae promastigotes (UC strain) 0.044579050999999995 2 LEVO MFFRVRFLLFFLLFRNLCCLLTSGCLLRVYGVGFSLGFFICMQIICGVCLAWLFFSCFICTNWYFVLFLWDFDLGFVIRS THICFTSLLFFLLYVHIFKCIVLIILFDTHILVWAVGFIIYIFIVVIGFIGYVLPCTMMSYWGLTVFSNILATVPVIGTW LCYWIWGSEYINDFTLLKLHVLHVLLPFVLILVIFMHLFCLHYFMSSDGFCDRFAFYCERLCFCMWFYLRDMFLAFLILF YVVYFIFINWYFVFHEESWVIVDTLKTSDKILPEWFFLFLFGFLKAVPDKFTGLLLMVILLFSLFLFILNCILWFVYCRS SLLWFTYSLILFYSIFMSGFLALYVILAYPIWMELQFWVLLLFMLVVCRLD P14548 Cytochrome c1, heme protein, mitochondrial, putative Leishmania tarentolae Leishmania tarentolae promastigotes (UC strain) 0.029907707 2 LEVO MAGKKAHPIKRDWYWNHNDRLEIWHSLDWPSVRRGRQIYTEVFAPCHSLGRMTFTHFQGFMTREEIKQLASQYEMIDSEP DAEGNLNRRPGKPTDTLPTPYPNQRAAQFANNGAEPPDLQHAVFGKEGGSDYIFSLVTGYNWGNGELMEIPPFAPEVKPG QFWNPYFKGCVLSMPPPLSDGLVDYEDGTPATISQMAKDVVNFLRWSAESEYDDRRVAFWKVITTVGLVNCLLLHYGQKN TNWRIYGRTTFRYWKKVW A0A640KA58 LtaP17.1410, Hypothetical protein, conserved Leishmania tarentolae Leishmania tarentolae promastigotes (UC strain) 0.008021193 2 LEVO MAPFWTNVLNYTYARGFIRIPIVLALPIFFNKYVLYEYEGAFKRWNAGHNQVDIWNRLKEKVAADEE A0A640KF59 LtaP32.3800, Hypothetical protein, conserved Leishmania tarentolae Leishmania tarentolae promastigotes (UC strain) 0.016839662 2 LEVO MAPPKASFPARIFAGDFMGINWNRVSWMAPYNNFYPITMCGGWGGRMWSSFIQYGRFDNRAGLIVVRNLIMGIPSALMAL LMLGNMDWFQCMQCAFYLPGIPIPEWAQNKYAKEMEWYSWNKPGAMAKHHYAGTVSIPGTEKYITEM A0A640KPN1 Rieske iron-sulfur protein, putative Leishmania tarentolae Leishmania tarentolae promastigotes (UC strain) 0.031494868999999995 2 LEVO SLVFKQLEGNAPLTKKNKPVNSWSDEFMKPPQSAEMTTKYGRYAKYSDPALCDVDTSEEVVLNTYPDGAPQGRIEATAGV ALKDYDASMWDEEFFRKHILKPKLADEVEDRARVTDYALNSAMLGFVILMARYAVLPLWYVGQPAMSMVGQMNIEAEVGE LDERQCTTVVWRGKPVFVYRRSARQMKEVTETPLSALKDPETDEARFPDHRDKAVVIAICTHLGCVPIPNEGLFNGFFCP CHGSHYDPSGRIRQGPAPLNLEVPPYRWIDDNTIYMGKL A0A640KYQ2 LtaP35.0250, Hypothetical protein, conserved Leishmania tarentolae Leishmania tarentolae promastigotes (UC strain) 0.012990754999999998 2 LEVO RAPARPGPTLYGWGRTEQKRRLEYEATESKYHKRDFNKSWDVAGVEQRYSDFMQVRTYFSIGSRWGTWLYNMIQFYVLSM LPIFAFMHFLHKSIEAYDDSIRKAAWW A0A640KRZ1 Ubiquinol-cytochrome-c reductase-like protein Leishmania tarentolae Leishmania tarentolae promastigotes (UC strain) 0.007981285999999999 2 LEVO MASDPVDIKLDLEKECLATDCAKKVEAYNACLERIKTVSPEKEPHCYNQYFAIVHCVDVCVDPKLWPTLK A0A640KNT3 LtaP27.0110, Hypothetical protein, conserved Leishmania tarentolae Leishmania tarentolae promastigotes (UC strain) 0.007997269 2 LEVO QSMTAPIGKGSVVPMKFDSLKPAYVPKSFTTQFFVLGTWSISNMITNFVIGFLIIAAANGGLSGAWPPDPHSLHP A0A640KKU7 unassigned helix Leishmania tarentolae Leishmania tarentolae promastigotes (UC strain) 0.002060531 2 LEVO (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) PROTOPORPHYRIN IX CONTAINING FE 0.000616487 4 HEM singleParticle particle 7.9

50 mM HEPES pH 7.9, 300 mM NaCl, 4 mM MgCl2, 20 uM CaCl2, 0.1 mM Dithiothreitol, and 0.5% n-dodecyl-beta-D-maltoside

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