[English] 日本語

- EMDB-50752: CIII2/CIV respiratory supercomplex from Mycobacterium smegmatis w... -
+
Open data
-
Basic information
Entry | ![]() | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Title | CIII2/CIV respiratory supercomplex from Mycobacterium smegmatis with lansoprazole sulfide | |||||||||
![]() | ||||||||||
![]() |
| |||||||||
![]() | RESPIRATORY SUPERCOMPLEX / MEMBRANE PROTEIN / ACTINOBACTERIA / ELECTRON TRANSPORT | |||||||||
Function / homology | ![]() aerobic electron transport chain / cytochrome-c oxidase / oxidative phosphorylation / quinol-cytochrome-c reductase / quinol-cytochrome-c reductase activity / cytochrome-c oxidase activity / superoxide dismutase / electron transport coupled proton transport / superoxide dismutase activity / oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen ...aerobic electron transport chain / cytochrome-c oxidase / oxidative phosphorylation / quinol-cytochrome-c reductase / quinol-cytochrome-c reductase activity / cytochrome-c oxidase activity / superoxide dismutase / electron transport coupled proton transport / 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 Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 2.6 Å | |||||||||
![]() | Kovalova T / Krol S / Gamiz-Hernandez A / Sjostrand D / Kaila V / Brzezinski P / Hogbom M | |||||||||
Funding support | ![]()
| |||||||||
![]() | ![]() Title: Inhibition mechanism of potential antituberculosis compound lansoprazole sulfide. Authors: Terezia Kovalova / Sylwia Król / Ana P Gamiz-Hernandez / Dan Sjöstrand / Ville R I Kaila / Peter Brzezinski / Martin Högbom / ![]() Abstract: Tuberculosis is one of the most common causes of death worldwide, with a rapid emergence of multi-drug-resistant strains underscoring the need for new antituberculosis drugs. Recent studies indicate ...Tuberculosis is one of the most common causes of death worldwide, with a rapid emergence of multi-drug-resistant strains underscoring the need for new antituberculosis drugs. Recent studies indicate that lansoprazole-a known gastric proton pump inhibitor and its intracellular metabolite, lansoprazole sulfide (LPZS)-are potential antituberculosis compounds. Yet, their inhibitory mechanism and site of action still remain unknown. Here, we combine biochemical, computational, and structural approaches to probe the interaction of LPZS with the respiratory chain supercomplex IIIIV of , a close homolog of supercomplex. We show that LPZS binds to the Q cavity of the mycobacterial supercomplex, inhibiting the quinol substrate oxidation process and the activity of the enzyme. We solve high-resolution (2.6 Å) cryo-electron microscopy (cryo-EM) structures of the supercomplex with bound LPZS that together with microsecond molecular dynamics simulations, directed mutagenesis, and functional assays reveal key interactions that stabilize the inhibitor, but also how mutations can lead to the emergence of drug resistance. Our combined findings reveal an inhibitory mechanism of LPZS and provide a structural basis for drug development against tuberculosis. | |||||||||
History |
|
-
Structure visualization
Supplemental images |
---|
-
Downloads & links
-EMDB archive
Map data | ![]() | 567.4 MB | ![]() | |
---|---|---|---|---|
Header (meta data) | ![]() ![]() | 36.6 KB 36.6 KB | Display Display | ![]() |
Images | ![]() | 81.9 KB | ||
Filedesc metadata | ![]() | 9.8 KB | ||
Others | ![]() ![]() | 558 MB 558 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 9ftzMC ![]() 9fu0C M: atomic model generated by this map C: citing same article ( |
---|---|
Similar structure data | Similarity search - Function & homology ![]() |
-
Links
EMDB pages | ![]() ![]() |
---|---|
Related items in Molecule of the Month |
-
Map
File | ![]() | ||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 0.828 Å | ||||||||||||||||||||||||||||||||||||
Density |
| ||||||||||||||||||||||||||||||||||||
Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
|
-Supplemental data
-Half map: #2
File | emd_50752_half_map_1.map | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Projections & Slices |
| ||||||||||||
Density Histograms |
-Half map: #1
File | emd_50752_half_map_2.map | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Projections & Slices |
| ||||||||||||
Density Histograms |
-
Sample components
+Entire : The respiratory supercomplex
+Supramolecule #1: The respiratory supercomplex
+Macromolecule #1: Cytochrome bc1 complex cytochrome c subunit
+Macromolecule #2: Cytochrome bc1 complex cytochrome c subunit
+Macromolecule #3: Cytochrome bc1 complex cytochrome b subunit
+Macromolecule #4: Transmembrane protein
+Macromolecule #5: Probable cytochrome c oxidase subunit 3
+Macromolecule #6: Cytochrome c oxidase polypeptide 4
+Macromolecule #7: Cytochrome c oxidase subunit 1
+Macromolecule #8: cytochrome-c oxidase
+Macromolecule #9: Cytochrome c oxidase subunit
+Macromolecule #10: Uncharacterized protein MSMEG_4692/MSMEI_4575
+Macromolecule #11: LpqE protein
+Macromolecule #12: Superoxide dismutase [Cu-Zn]
+Macromolecule #13: MENAQUINONE-9
+Macromolecule #14: acyl-phosphatidyl-myo-inositol dimannoside (AcPIM2)
+Macromolecule #15: HEME C
+Macromolecule #16: FE2/S2 (INORGANIC) CLUSTER
+Macromolecule #17: (2R)-2-(hexadecanoyloxy)-3-{[(S)-hydroxy{[(1R,2R,3R,4R,5R,6S)-2,3...
+Macromolecule #18: (1R)-2-(dodecanoyloxy)-1-[(phosphonooxy)methyl]ethyl tetradecanoate
+Macromolecule #19: [(2~{R})-3-[[(1~{S},2~{R},3~{S},4~{S},5~{R},6~{R})-2-[(2~{R},3~{S...
+Macromolecule #20: PROTOPORPHYRIN IX CONTAINING FE
+Macromolecule #21: CARDIOLIPIN
+Macromolecule #22: Lansoprazole sulfide
+Macromolecule #23: TRIDECANE
+Macromolecule #24: 1,2-Distearoyl-sn-glycerophosphoethanolamine
+Macromolecule #25: HEME-A
+Macromolecule #26: COPPER (II) ION
+Macromolecule #27: CALCIUM ION
+Macromolecule #28: (2S)-1-(hexadecanoyloxy)propan-2-yl (10S)-10-methyloctadecanoate
+Macromolecule #29: MAGNESIUM ION
+Macromolecule #30: PALMITIC ACID
+Macromolecule #31: water
-Experimental details
-Structure determination
Method | cryo EM |
---|---|
![]() | single particle reconstruction |
Aggregation state | particle |
-
Sample preparation
Buffer | pH: 7.4 |
---|---|
Grid | Model: Quantifoil R2/2 / Material: COPPER / Mesh: 300 / Support film - Material: CARBON / Support film - topology: HOLEY |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV |
-
Electron microscopy
Microscope | TFS KRIOS |
---|---|
Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 40.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.2 µm / Nominal defocus min: 0.6 µm |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
-
Image processing
Startup model | Type of model: NONE |
---|---|
Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 2.6 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 100396 |
Initial angle assignment | Type: MAXIMUM LIKELIHOOD |
Final angle assignment | Type: MAXIMUM LIKELIHOOD |