- EMDB-65138: Cryo-EM structure of F-ATP synthase from Mycobacteroides abscessu... -
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Basic information
Entry
Database: EMDB / ID: EMD-65138
Title
Cryo-EM structure of F-ATP synthase from Mycobacteroides abscessus (Rotational State 1)
Map data
Sample
Complex: Cryo-EM structure of F-ATP synthase from Mycobacteroides abscessus (Rotational State 1)
Protein or peptide: ATP synthase subunit alpha
Protein or peptide: ATP synthase subunit beta
Protein or peptide: ATP synthase gamma chain
Protein or peptide: ATP synthase epsilon chain
Protein or peptide: ATP synthase subunit b
Protein or peptide: ATP synthase subunit b-delta
Ligand: ADENOSINE-5'-TRIPHOSPHATE
Ligand: MAGNESIUM ION
Ligand: ADENOSINE-5'-DIPHOSPHATE
Keywords
Hydrolase / ATP synthase / membrane protein / mycobacterium abscessus / mycobacterial / nontuberculous mycobacteria
Function / homology
Function and homology information
proton motive force-driven plasma membrane ATP synthesis / proton-transporting ATPase activity, rotational mechanism / H+-transporting two-sector ATPase / proton-transporting ATP synthase complex / proton-transporting ATP synthase activity, rotational mechanism / ADP binding / 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 b/b', bacterial/chloroplast / ATP synthase B/B' CF(0) / ATPase, OSCP/delta subunit, conserved site / ATP synthase delta (OSCP) subunit signature. / F1F0 ATP synthase OSCP/delta subunit, N-terminal domain superfamily / ATPase, OSCP/delta subunit / ATP synthase delta (OSCP) subunit ...ATP synthase, F0 complex, subunit b, bacterial / F-type ATP synthase subunit B-like, membrane domain superfamily / : / ATP synthase, F0 complex, subunit b/b', bacterial/chloroplast / ATP synthase B/B' CF(0) / ATPase, OSCP/delta subunit, conserved site / ATP synthase delta (OSCP) subunit signature. / F1F0 ATP synthase OSCP/delta subunit, N-terminal domain superfamily / 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, F1 complex, beta subunit / ATP synthase, alpha subunit, C-terminal domain superfamily / : / ATP synthase, F1 complex, alpha subunit nucleotide-binding domain / 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 alpha/beta chain, C terminal domain / : / 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
ATP synthase subunit b / ATP synthase subunit b-delta / ATP synthase subunit alpha / ATP synthase gamma chain / ATP synthase subunit beta / ATP synthase epsilon chain Similarity search - Component
Journal: Structure / Year: 2025 Title: The Mycobacterium abscessus F-ATP synthase structure reveals mechanistic elements enabling rational drug design to combat NTM lung disease. Authors: Tuck Choy Fong / Wuan-Geok Saw / Vikneswaran Mathiyazakan / Chui Fann Wong / Gerhard Grüber / Abstract: The increasing global incidence rate of nontuberculous mycobacteria pulmonary infections is an emerging public health crisis, with Mycobacterium abscessus (Mab) being one of the most virulent and ...The increasing global incidence rate of nontuberculous mycobacteria pulmonary infections is an emerging public health crisis, with Mycobacterium abscessus (Mab) being one of the most virulent and treatment-refractory of these pathogens. Mab exhibits extensive intrinsic and acquired drug resistance mechanisms that neutralize most antimicrobials against this pathogen, causing a clinical conundrum. As Mab relies on oxidative phosphorylation as its main energy source, its essential F-ATP synthase is a promising drug target but remains poorly understood due to a lack of host expression systems. Here, we present the expression, isolation, and structural characterization of Mab's F-ATP synthase. Cryo-EM reveals three nucleotide-driven rotational states at atomic resolution, highlighting key catalytic centers, a mycobacteria-specific α-subunit extension involved in the inhibition of ATP hydrolysis, energy transmission via the γε-stalk, and mechanochemical coupling by the δ-subunit. The structural blueprint allows precise target engagement and optimization of hits-to-leads and existing anti-Mab inhibitors targeting the engine.
Model: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 300 / Support film - #0 - Film type ID: 1 / Support film - #0 - Material: CARBON / Support film - #0 - topology: HOLEY / Support film - #1 - Film type ID: 2 / Support film - #1 - Material: GRAPHENE / Support film - #1 - topology: CONTINUOUS / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 60 sec. / Pretreatment - Atmosphere: AIR
Vitrification
Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277.15 K / Instrument: FEI VITROBOT MARK IV
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Electron microscopy
Microscope
TFS KRIOS
Specialist optics
Energy filter - Name: TFS Selectris X / Energy filter - Slit width: 10 eV
Image recording
Film or detector model: FEI FALCON IV (4k x 4k) / Number grids imaged: 3 / Average exposure time: 3.25 sec. / Average electron dose: 60.0 e/Å2
Electron beam
Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
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