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- PDB-8g0e: Cryo-EM structure of TBAJ-876-bound Mycobacterium smegmatis ATP s... -

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Basic information

Entry
Database: PDB / ID: 8g0e
TitleCryo-EM structure of TBAJ-876-bound Mycobacterium smegmatis ATP synthase rotational state 3
Components(ATP synthase ...) x 8
KeywordsTRANSLOCASE/INHIBITOR / ATP synthase / mycobacterial / inhibitor / tuberculosis / antibiotic / HYDROLASE / TRANSLOCASE-INHIBITOR complex
Function / homology
Function and homology information


proton motive force-driven plasma membrane ATP synthesis / proton-transporting ATP synthase complex, coupling factor F(o) / proton-transporting ATP synthase complex, catalytic core F(1) / H+-transporting two-sector ATPase / proton-transporting ATPase activity, rotational mechanism / proton-transporting ATP synthase activity, rotational mechanism / hydrolase activity / lipid binding / ATP hydrolysis activity / ATP binding / plasma membrane
Similarity search - Function
ATP synthase, F0 complex, subunit b, bacterial / F-type ATP synthase subunit B-like, membrane domain superfamily / : / ATP synthase, F0 complex, subunit A, bacterial/chloroplast / ATP synthase, F0 complex, subunit b/b', bacterial/chloroplast / ATP synthase B/B' CF(0) / ATP synthase, F0 complex, subunit C, bacterial/chloroplast / ATP synthase, F0 complex, subunit A / ATP synthase, F0 complex, subunit A, active site / ATP synthase, F0 complex, subunit A superfamily ...ATP synthase, F0 complex, subunit b, bacterial / F-type ATP synthase subunit B-like, membrane domain superfamily / : / ATP synthase, F0 complex, subunit A, bacterial/chloroplast / ATP synthase, F0 complex, subunit b/b', bacterial/chloroplast / ATP synthase B/B' CF(0) / ATP synthase, F0 complex, subunit C, bacterial/chloroplast / ATP synthase, F0 complex, subunit A / ATP synthase, F0 complex, subunit A, active site / ATP synthase, F0 complex, subunit A superfamily / ATP synthase A chain / ATP synthase a subunit signature. / ATPase, OSCP/delta subunit / ATP synthase delta (OSCP) subunit / ATP synthase, F1 complex, delta/epsilon subunit / ATP synthase, F1 complex, delta/epsilon subunit, N-terminal / F0F1 ATP synthase delta/epsilon subunit, N-terminal / ATP synthase, Delta/Epsilon chain, beta-sandwich domain / ATP synthase, F0 complex, subunit C / F1F0 ATP synthase subunit C superfamily / ATP synthase, F0 complex, subunit C, DCCD-binding site / ATP synthase c subunit signature. / ATP synthase, F1 complex, gamma subunit conserved site / ATP synthase gamma subunit signature. / ATP synthase, F1 complex, beta subunit / ATP synthase, alpha subunit, C-terminal domain superfamily / : / ATP synthase, F1 complex, gamma subunit / ATP synthase, F1 complex, gamma subunit superfamily / ATP synthase / ATP synthase, alpha subunit, C-terminal / ATP synthase, F1 complex, alpha subunit / ATP synthase, F1 complex, alpha subunit nucleotide-binding domain / ATP synthase alpha/beta chain, C terminal domain / V-ATPase proteolipid subunit C-like domain / F/V-ATP synthase subunit C superfamily / ATP synthase subunit C / ATPase, F1/V1 complex, beta/alpha subunit, C-terminal / C-terminal domain of V and A type ATP synthase / ATP synthase subunit alpha, N-terminal domain-like superfamily / ATPase, F1/V1/A1 complex, alpha/beta subunit, N-terminal domain superfamily / ATPase, F1/V1/A1 complex, alpha/beta subunit, N-terminal domain / ATP synthase alpha/beta family, beta-barrel domain / ATPase, alpha/beta subunit, nucleotide-binding domain, active site / ATP synthase alpha and beta subunits signature. / ATPase, F1/V1/A1 complex, alpha/beta subunit, nucleotide-binding domain / ATP synthase alpha/beta family, nucleotide-binding domain / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
ADENOSINE-5'-TRIPHOSPHATE / PHOSPHATE ION / Chem-YGR / ATP synthase epsilon chain / ATP synthase subunit beta / ATP synthase gamma chain / ATP synthase subunit alpha / ATP synthase subunit b-delta / ATP synthase subunit b / ATP synthase subunit c / ATP synthase subunit a
Similarity search - Component
Biological speciesMycolicibacterium smegmatis MC2 155 (bacteria)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.6 Å
AuthorsCourbon, G.M. / Rubinstein, J.L.
Funding support Canada, 1items
OrganizationGrant numberCountry
Canadian Institutes of Health Research (CIHR)PJT162186 Canada
CitationJournal: EMBO J / Year: 2023
Title: Mechanism of mycobacterial ATP synthase inhibition by squaramides and second generation diarylquinolines.
Authors: Gautier M Courbon / Paul R Palme / Lea Mann / Adrian Richter / Peter Imming / John L Rubinstein /
Abstract: Mycobacteria, such as Mycobacterium tuberculosis, depend on the activity of adenosine triphosphate (ATP) synthase for growth. The diarylquinoline bedaquiline (BDQ), a mycobacterial ATP synthase ...Mycobacteria, such as Mycobacterium tuberculosis, depend on the activity of adenosine triphosphate (ATP) synthase for growth. The diarylquinoline bedaquiline (BDQ), a mycobacterial ATP synthase inhibitor, is an important medication for treatment of drug-resistant tuberculosis but suffers from off-target effects and is susceptible to resistance mutations. Consequently, both new and improved mycobacterial ATP synthase inhibitors are needed. We used electron cryomicroscopy and biochemical assays to study the interaction of Mycobacterium smegmatis ATP synthase with the second generation diarylquinoline TBAJ-876 and the squaramide inhibitor SQ31f. The aryl groups of TBAJ-876 improve binding compared with BDQ, while SQ31f, which blocks ATP synthesis ~10 times more potently than ATP hydrolysis, binds a previously unknown site in the enzyme's proton-conducting channel. Remarkably, BDQ, TBAJ-876, and SQ31f all induce similar conformational changes in ATP synthase, suggesting that the resulting conformation is particularly suited for drug binding. Further, high concentrations of the diarylquinolines uncouple the transmembrane proton motive force while for SQ31f they do not, which may explain why high concentrations of diarylquinolines, but not SQ31f, have been reported to kill mycobacteria.
History
DepositionJan 31, 2023Deposition site: RCSB / Processing site: RCSB
Revision 1.0Feb 15, 2023Provider: repository / Type: Initial release
Revision 1.1Jul 12, 2023Group: Database references / Category: citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_ASTM / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year
Revision 1.2Aug 9, 2023Group: Database references / Category: citation / Item: _citation.journal_volume
Revision 1.3Jun 19, 2024Group: Data collection / Category: chem_comp_atom / chem_comp_bond

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: ATP synthase subunit alpha
B: ATP synthase subunit alpha
C: ATP synthase subunit alpha
D: ATP synthase subunit beta
E: ATP synthase subunit beta
F: ATP synthase subunit beta
G: ATP synthase gamma chain
H: ATP synthase epsilon chain
b: ATP synthase subunit b
d: ATP synthase subunit b-delta
9: ATP synthase subunit c
1: ATP synthase subunit c
2: ATP synthase subunit c
3: ATP synthase subunit c
4: ATP synthase subunit c
5: ATP synthase subunit c
6: ATP synthase subunit c
7: ATP synthase subunit c
8: ATP synthase subunit c
a: ATP synthase subunit a
hetero molecules


Theoretical massNumber of molelcules
Total (without water)555,49936
Polymers548,67520
Non-polymers6,82416
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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ATP synthase ... , 8 types, 20 molecules ABCDEFGHbd912345678a

#1: Protein ATP synthase subunit alpha / ATP synthase F1 sector subunit alpha / F-ATPase subunit alpha


Mass: 58951.461 Da / Num. of mol.: 3 / Source method: isolated from a natural source
Source: (natural) Mycolicibacterium smegmatis MC2 155 (bacteria)
References: UniProt: A0R202, H+-transporting two-sector ATPase
#2: Protein ATP synthase subunit beta / ATP synthase F1 sector subunit beta / F-ATPase subunit beta


Mass: 51670.453 Da / Num. of mol.: 3 / Source method: isolated from a natural source
Source: (natural) Mycolicibacterium smegmatis MC2 155 (bacteria)
References: UniProt: A0R200, H+-transporting two-sector ATPase
#3: Protein ATP synthase gamma chain / ATP synthase F1 sector gamma subunit / F-ATPase gamma subunit


Mass: 33439.836 Da / Num. of mol.: 1 / Source method: isolated from a natural source
Source: (natural) Mycolicibacterium smegmatis MC2 155 (bacteria)
References: UniProt: A0R201
#4: Protein ATP synthase epsilon chain / ATP synthase F1 sector epsilon subunit / F-ATPase epsilon subunit


Mass: 13277.741 Da / Num. of mol.: 1 / Source method: isolated from a natural source
Source: (natural) Mycolicibacterium smegmatis MC2 155 (bacteria)
References: UniProt: A0R1Z9
#5: Protein ATP synthase subunit b / ATP synthase F(0) sector subunit b / ATPase subunit I / F-type ATPase subunit b / F-ATPase subunit b


Mass: 17636.701 Da / Num. of mol.: 1 / Source method: isolated from a natural source
Source: (natural) Mycolicibacterium smegmatis MC2 155 (bacteria)
References: UniProt: A0R204
#6: Protein ATP synthase subunit b-delta


Mass: 47504.723 Da / Num. of mol.: 1 / Source method: isolated from a natural source
Source: (natural) Mycolicibacterium smegmatis MC2 155 (bacteria)
References: UniProt: A0R203
#7: Protein
ATP synthase subunit c


Mass: 8597.982 Da / Num. of mol.: 9 / Source method: isolated from a natural source
Source: (natural) Mycolicibacterium smegmatis MC2 155 (bacteria)
References: UniProt: A0R205
#8: Protein ATP synthase subunit a


Mass: 27568.482 Da / Num. of mol.: 1 / Source method: isolated from a natural source
Source: (natural) Mycolicibacterium smegmatis MC2 155 (bacteria)
References: UniProt: A0R206

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Non-polymers , 4 types, 16 molecules

#9: Chemical
ChemComp-ATP / ADENOSINE-5'-TRIPHOSPHATE


Mass: 507.181 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C10H16N5O13P3 / Comment: ATP, energy-carrying molecule*YM
#10: Chemical
ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Mg
#11: Chemical ChemComp-PO4 / PHOSPHATE ION


Mass: 94.971 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: PO4
#12: Chemical
ChemComp-YGR / (1R,2S)-1-(6-bromo-2-methoxyquinolin-3-yl)-2-(2,6-dimethoxypyridin-4-yl)-4-(dimethylamino)-1-(2,3,6-trimethoxypyridin-4-yl)butan-2-ol


Mass: 657.552 Da / Num. of mol.: 7 / Source method: obtained synthetically / Formula: C31H37BrN4O7 / Feature type: SUBJECT OF INVESTIGATION

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Details

Has ligand of interestY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: TBAJ-876-bound Mycobacterium smegmatis ATP synthase rotational state 3
Type: COMPLEX / Entity ID: #1-#8 / Source: NATURAL
Molecular weightExperimental value: NO
Source (natural)Organism: Mycolicibacterium smegmatis MC2 155 (bacteria)
Buffer solutionpH: 7.4
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2100 nm / Nominal defocus min: 700 nm
Image recordingElectron dose: 44 e/Å2 / Film or detector model: FEI FALCON IV (4k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 2.6 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 166169 / Symmetry type: POINT

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