Mycobacterial CIII2CIV2 supercomplex, inhibitor free, -Lpqe cyt cc open
マップデータ
Mycobacterium CIII2CIV2 supercomplex, inhibitor free, -Lpqe cyt. cc open.
試料
複合体: Respiratory Complex CIII2CIV2SOD2 from Mycobacterium smegmatis
タンパク質・ペプチド: x 6種
タンパク質・ペプチド: x 6種
リガンド: x 11種
キーワード
Electron transport chain / CIII2CIV2 supercomplex / membrane protein
機能・相同性
機能・相同性情報
aerobic electron transport chain / cytochrome-c oxidase / quinol-cytochrome-c reductase / quinol-cytochrome-c reductase activity / cytochrome-c oxidase activity / superoxide dismutase / superoxide dismutase activity / oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen / ATP synthesis coupled electron transport / respiratory electron transport chain ...aerobic electron transport chain / cytochrome-c oxidase / quinol-cytochrome-c reductase / quinol-cytochrome-c reductase activity / cytochrome-c oxidase activity / superoxide dismutase / superoxide dismutase activity / oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen / ATP synthesis coupled electron transport / respiratory electron transport chain / monooxygenase activity / electron transport chain / 2 iron, 2 sulfur cluster binding / iron ion binding / copper ion binding / heme binding / metal ion binding / membrane / plasma membrane 類似検索 - 分子機能
Protein of unknown function DUF5130 / Domain of unknown function (DUF5130) / Cytochrome bc1 complex, cytochrome c subunit / Cytochrome c oxidase subunit IV, actinobacteria / QcrA subunit, N-terminal / Cytochrome c oxidase subunit IV / QcrA subunit N-terminal region / Cytochrome b(N-terminal)/b6/petB / : / Cytochrome C oxidase, cbb3-type, subunit III ...Protein of unknown function DUF5130 / Domain of unknown function (DUF5130) / Cytochrome bc1 complex, cytochrome c subunit / Cytochrome c oxidase subunit IV, actinobacteria / QcrA subunit, N-terminal / Cytochrome c oxidase subunit IV / QcrA subunit N-terminal region / Cytochrome b(N-terminal)/b6/petB / : / Cytochrome C oxidase, cbb3-type, subunit III / Cytochrome c oxidase subunit III / Cytochrome c oxidase subunit III-like / Cytochrome c oxidase, subunit III, 4-helical bundle / Cytochrome c oxidase subunit III / Heme-copper oxidase subunit III family profile. / Cytochrome c oxidase subunit III-like superfamily / Cytochrome c/quinol oxidase subunit II / Superoxide dismutase, copper/zinc, binding site / Copper/Zinc superoxide dismutase signature 2. / Superoxide dismutase, copper/zinc binding domain / Copper/zinc superoxide dismutase (SODC) / Superoxide dismutase-like, copper/zinc binding domain superfamily / Copper centre Cu(A) / CO II and nitrous oxide reductase dinuclear copper centers signature. / Cytochrome C oxidase subunit II, transmembrane domain superfamily / Cytochrome C oxidase subunit II, periplasmic domain / Cytochrome c oxidase subunit II-like C-terminal / Cytochrome oxidase subunit II copper A binding domain profile. / Cytochrome b/b6, N-terminal / Cytochrome b/b6-like domain superfamily / Cytochrome b/b6 N-terminal region profile. / Di-haem cytochrome, transmembrane / Rieske iron-sulphur protein / Cytochrome c / Rieske [2Fe-2S] domain / Rieske [2Fe-2S] iron-sulphur domain / Rieske [2Fe-2S] iron-sulfur domain profile. / Rieske [2Fe-2S] iron-sulphur domain superfamily / Cytochrome c family profile. / Cytochrome c-like domain / Cytochrome c-like domain superfamily / Cupredoxin / Prokaryotic membrane lipoprotein lipid attachment site profile. 類似検索 - ドメイン・相同性
Probable cytochrome c oxidase subunit 3 / Uncharacterized protein MSMEG_4692/MSMEI_4575 / Cytochrome bc1 complex cytochrome b subunit / Cytochrome bc1 complex cytochrome c subunit / Cytochrome c oxidase polypeptide 4 / Uncharacterized protein / Superoxide dismutase [Cu-Zn] / Cytochrome bc1 complex Rieske iron-sulfur subunit / cytochrome-c oxidase / LpqE protein 類似検索 - 構成要素
ジャーナル: Elife / 年: 2021 タイトル: Structure of mycobacterial CIIICIV respiratory supercomplex bound to the tuberculosis drug candidate telacebec (Q203). 著者: David J Yanofsky / Justin M Di Trani / Sylwia Król / Rana Abdelaziz / Stephanie A Bueler / Peter Imming / Peter Brzezinski / John L Rubinstein / 要旨: The imidazopyridine telacebec, also known as Q203, is one of only a few new classes of compounds in more than 50 years with demonstrated antituberculosis activity in humans. Telacebec inhibits the ...The imidazopyridine telacebec, also known as Q203, is one of only a few new classes of compounds in more than 50 years with demonstrated antituberculosis activity in humans. Telacebec inhibits the mycobacterial respiratory supercomplex composed of complexes III and IV (CIIICIV). In mycobacterial electron transport chains, CIIICIV replaces canonical CIII and CIV, transferring electrons from the intermediate carrier menaquinol to the final acceptor, molecular oxygen, while simultaneously transferring protons across the inner membrane to power ATP synthesis. We show that telacebec inhibits the menaquinol:oxygen oxidoreductase activity of purified CIIICIV at concentrations similar to those needed to inhibit electron transfer in mycobacterial membranes and growth in culture. We then used electron cryomicroscopy (cryoEM) to determine structures of CIIICIV both in the presence and absence of telacebec. The structures suggest that telacebec prevents menaquinol oxidation by blocking two different menaquinol binding modes to prevent CIIICIV activity.