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- PDB-7e1x: Cryo-EM structure of hybrid respiratory supercomplex consisting o... -
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Open data
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Basic information
Entry | Database: PDB / ID: 7e1x | ||||||||||||||||||
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Title | Cryo-EM structure of hybrid respiratory supercomplex consisting of Mycobacterium tuberculosis complexIII and Mycobacterium smegmatis complexIV in presence of TB47 | ||||||||||||||||||
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![]() | OXIDOREDUCTASE / Mycobacterium smegmatis / mycobacterium tuberculosis / complexIII / complexIV / electron transport / anti-TB drugs | ||||||||||||||||||
Function / homology | ![]() aerobic electron transport chain / cytochrome-c oxidase / quinol-cytochrome-c reductase / ubiquinol-cytochrome-c reductase activity / cytochrome-c oxidase activity / : / ATP synthesis coupled electron transport / respiratory electron transport chain / peptidoglycan-based cell wall / electron transport chain ...aerobic electron transport chain / cytochrome-c oxidase / quinol-cytochrome-c reductase / ubiquinol-cytochrome-c reductase activity / cytochrome-c oxidase activity / : / ATP synthesis coupled electron transport / respiratory electron transport chain / peptidoglycan-based cell wall / electron transport chain / 2 iron, 2 sulfur cluster binding / oxidoreductase activity / iron ion binding / copper ion binding / heme binding / membrane / metal ion binding / plasma membrane Similarity search - Function | ||||||||||||||||||
Biological species | ![]() ![]() ![]() | ||||||||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.93 Å | ||||||||||||||||||
![]() | Zhou, S. / Wang, W. / Gao, Y. / Gong, H. / Rao, Z. | ||||||||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Structure of cytochrome in complex with Q203 and TB47, two anti-TB drug candidates. Authors: Shan Zhou / Weiwei Wang / Xiaoting Zhou / Yuying Zhang / Yuezheng Lai / Yanting Tang / Jinxu Xu / Dongmei Li / Jianping Lin / Xiaolin Yang / Ting Ran / Hongming Chen / Luke W Guddat / Quan ...Authors: Shan Zhou / Weiwei Wang / Xiaoting Zhou / Yuying Zhang / Yuezheng Lai / Yanting Tang / Jinxu Xu / Dongmei Li / Jianping Lin / Xiaolin Yang / Ting Ran / Hongming Chen / Luke W Guddat / Quan Wang / Yan Gao / Zihe Rao / Hongri Gong / ![]() ![]() Abstract: Pathogenic mycobacteria pose a sustained threat to global human health. Recently, cytochrome complexes have gained interest as targets for antibiotic drug development. However, there is currently no ...Pathogenic mycobacteria pose a sustained threat to global human health. Recently, cytochrome complexes have gained interest as targets for antibiotic drug development. However, there is currently no structural information for the cytochrome complex from these pathogenic mycobacteria. Here, we report the structures of cytochrome alone (2.68 Å resolution) and in complex with clinical drug candidates Q203 (2.67 Å resolution) and TB47 (2.93 Å resolution) determined by single-particle cryo-electron microscopy. cytochrome forms a dimeric assembly with endogenous menaquinone/menaquinol bound at the quinone/quinol-binding pockets. We observe Q203 and TB47 bound at the quinol-binding site and stabilized by hydrogen bonds with the side chains of Thr and Glu, residues that are conserved across pathogenic mycobacteria. These high-resolution images provide a basis for the design of new mycobacterial cytochrome inhibitors that could be developed into broad-spectrum drugs to treat mycobacterial infections. | ||||||||||||||||||
History |
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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PDBx/mmCIF format | ![]() | 932.2 KB | Display | ![]() |
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PDB format | ![]() | 779.4 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
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-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 30945MC ![]() 7e1vC ![]() 7e1wC M: map data used to model this data C: citing same article ( |
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Similar structure data |
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Links
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Assembly
Deposited unit | ![]()
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Components
-Cytochrome c oxidase subunit ... , 4 types, 8 molecules EQFRGSIU
#1: Protein | Mass: 38077.465 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #2: Protein | Mass: 64162.965 Da / Num. of mol.: 2 / Source method: isolated from a natural source Source: (natural) ![]() #3: Protein | Mass: 22196.883 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #5: Protein | Mass: 8365.549 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() |
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-Protein , 4 types, 8 molecules HTJVDPMA
#4: Protein | Mass: 15177.424 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #6: Protein | Mass: 15910.971 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() #7: Protein | Mass: 11329.909 Da / Num. of mol.: 2 / Source method: isolated from a natural source Source: (natural) ![]() #9: Protein | Mass: 46976.465 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Strain: H37Rv / Gene: qcrA, Rv2195, MTCY190.06 Production host: ![]() References: UniProt: P9WH23 |
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-Cytochrome bc1 complex cytochrome ... , 2 types, 4 molecules NBOC
#8: Protein | Mass: 61077.062 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Strain: H37Rv / Gene: qcrB, Rv2196, MTCY190.07 Production host: ![]() References: UniProt: P9WP37, quinol-cytochrome-c reductase #10: Protein | Mass: 29152.365 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Strain: H37Rv / Gene: qcrC, Rv2194, MTCY190.05 Production host: ![]() References: UniProt: P9WP35, quinol-cytochrome-c reductase |
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-Non-polymers , 11 types, 59 molecules ![](data/chem/img/CU.gif)
![](data/chem/img/CDL.gif)
![](data/chem/img/PLM.gif)
![](data/chem/img/HEA.gif)
![](data/chem/img/9Y0.gif)
![](data/chem/img/HEM.gif)
![](data/chem/img/MQ9.gif)
![](data/chem/img/HV0.gif)
![](data/chem/img/FES.gif)
![](data/chem/img/9YF.gif)
![](data/chem/img/HEC.gif)
![](data/chem/img/CDL.gif)
![](data/chem/img/PLM.gif)
![](data/chem/img/HEA.gif)
![](data/chem/img/9Y0.gif)
![](data/chem/img/HEM.gif)
![](data/chem/img/MQ9.gif)
![](data/chem/img/HV0.gif)
![](data/chem/img/FES.gif)
![](data/chem/img/9YF.gif)
![](data/chem/img/HEC.gif)
#11: Chemical | ChemComp-CU / #12: Chemical | ChemComp-CDL / #13: Chemical | ChemComp-PLM / #14: Chemical | ChemComp-HEA / #15: Chemical | #16: Chemical | ChemComp-HEM / #17: Chemical | ChemComp-MQ9 / #18: Chemical | #19: Chemical | #20: Chemical | ChemComp-9YF / ( #21: Chemical | ChemComp-HEC / |
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-Details
Has ligand of interest | Y |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
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Molecular weight | Value: 0.8 MDa / Experimental value: YES | ||||||||||||||||||||||||
Source (natural) |
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Source (recombinant) | Organism: ![]() | ||||||||||||||||||||||||
Buffer solution | pH: 7.4 | ||||||||||||||||||||||||
Specimen | Conc.: 10 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||
Vitrification | Cryogen name: ETHANE |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Calibrated defocus min: 1200 nm / Calibrated defocus max: 1800 nm |
Image recording | Electron dose: 60 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
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Processing
Software | Name: PHENIX / Version: 1.16_3549: / Classification: refinement | ||||||||||||||||||||||||
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3D reconstruction | Resolution: 2.93 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 169988 / Symmetry type: POINT | ||||||||||||||||||||||||
Refinement | Highest resolution: 2.93 Å | ||||||||||||||||||||||||
Refine LS restraints |
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