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- PDB-8g1e: Structure of ACLY-D1026A-products-asym -

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Basic information

Entry
Database: PDB / ID: 8g1e
TitleStructure of ACLY-D1026A-products-asym
ComponentsATP-citrate synthase
KeywordsTRANSFERASE / Mutant
Function / homology
Function and homology information


ATP citrate synthase / ATP citrate synthase activity / citrate metabolic process / Fatty acyl-CoA biosynthesis / acetyl-CoA biosynthetic process / ChREBP activates metabolic gene expression / coenzyme A metabolic process / oxaloacetate metabolic process / negative regulation of ferroptosis / cholesterol biosynthetic process ...ATP citrate synthase / ATP citrate synthase activity / citrate metabolic process / Fatty acyl-CoA biosynthesis / acetyl-CoA biosynthetic process / ChREBP activates metabolic gene expression / coenzyme A metabolic process / oxaloacetate metabolic process / negative regulation of ferroptosis / cholesterol biosynthetic process / lipid biosynthetic process / fatty acid biosynthetic process / azurophil granule lumen / ficolin-1-rich granule lumen / ciliary basal body / Neutrophil degranulation / extracellular exosome / extracellular region / nucleoplasm / ATP binding / metal ion binding / membrane / cytosol
Similarity search - Function
ATP-citrate synthase / : / ATP-citrate synthase ATP-grasp domain / ATP-citrate synthase, citrate-binding domain / ATP citrate lyase citrate-binding / Succinyl-CoA synthetase domains / ATP-citrate lyase/succinyl-CoA ligase, active site / ATP-citrate lyase/succinyl-CoA ligase, conserved site / ATP-citrate lyase / succinyl-CoA ligases family active site. / ATP-citrate lyase / succinyl-CoA ligases family signature 1. ...ATP-citrate synthase / : / ATP-citrate synthase ATP-grasp domain / ATP-citrate synthase, citrate-binding domain / ATP citrate lyase citrate-binding / Succinyl-CoA synthetase domains / ATP-citrate lyase/succinyl-CoA ligase, active site / ATP-citrate lyase/succinyl-CoA ligase, conserved site / ATP-citrate lyase / succinyl-CoA ligases family active site. / ATP-citrate lyase / succinyl-CoA ligases family signature 1. / Succinyl-CoA synthetase, beta subunit, conserved site / ATP-citrate lyase / succinyl-CoA ligases family signature 3. / ATP-citrate lyase/succinyl-CoA ligase / CoA-ligase / CoA binding domain / Succinyl-CoA synthetase-like / CoA binding domain / CoA-binding / Citrate synthase / Citrate synthase-like, small alpha subdomain / Citrate synthase superfamily / Citrate synthase, C-terminal domain / NAD(P)-binding domain superfamily / Rossmann fold / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
ACETYL COENZYME *A / ADENOSINE-5'-DIPHOSPHATE / OXALOACETATE ION / PHOSPHATE ION / (3S)-citryl-Coenzyme A / Unknown ligand / ATP-citrate synthase
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.8 Å
AuthorsWei, X. / Marmorstein, R.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) United States
CitationJournal: Nat Commun / Year: 2023
Title: Allosteric role of the citrate synthase homology domain of ATP citrate lyase.
Authors: Xuepeng Wei / Kollin Schultz / Hannah L Pepper / Emily Megill / Austin Vogt / Nathaniel W Snyder / Ronen Marmorstein /
Abstract: ATP citrate lyase (ACLY) is the predominant nucleocytosolic source of acetyl-CoA and is aberrantly regulated in many diseases making it an attractive therapeutic target. Structural studies of ACLY ...ATP citrate lyase (ACLY) is the predominant nucleocytosolic source of acetyl-CoA and is aberrantly regulated in many diseases making it an attractive therapeutic target. Structural studies of ACLY reveal a central homotetrameric core citrate synthase homology (CSH) module flanked by acyl-CoA synthetase homology (ASH) domains, with ATP and citrate binding the ASH domain and CoA binding the ASH-CSH interface to produce acetyl-CoA and oxaloacetate products. The specific catalytic role of the CSH module and an essential D1026A residue contained within it has been a matter of debate. Here, we report biochemical and structural analysis of an ACLY-D1026A mutant demonstrating that this mutant traps a (3S)-citryl-CoA intermediate in the ASH domain in a configuration that is incompatible with the formation of acetyl-CoA, is able to convert acetyl-CoA and OAA to (3S)-citryl-CoA in the ASH domain, and can load CoA and unload acetyl-CoA in the CSH module. Together, this data support an allosteric role for the CSH module in ACLY catalysis.
History
DepositionFeb 2, 2023Deposition site: RCSB / Processing site: RCSB
Revision 1.0May 10, 2023Provider: repository / Type: Initial release
Revision 1.1Jun 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-citrate synthase
B: ATP-citrate synthase
C: ATP-citrate synthase
D: ATP-citrate synthase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)491,48722
Polymers483,7614
Non-polymers7,72718
Water1,62190
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

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Protein , 1 types, 4 molecules ABCD

#1: Protein
ATP-citrate synthase / ATP-citrate (pro-S-)-lyase / ACL / Citrate cleavage enzyme


Mass: 120940.125 Da / Num. of mol.: 4 / Mutation: D1026A
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: ACLY / Production host: Escherichia coli (E. coli) / References: UniProt: P53396, ATP citrate synthase

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Non-polymers , 7 types, 108 molecules

#2: Chemical
ChemComp-ACO / ACETYL COENZYME *A


Mass: 809.571 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C23H38N7O17P3S
#3: Chemical
ChemComp-OAA / OXALOACETATE ION


Mass: 131.064 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C4H3O5
#4: Chemical ChemComp-UNL / UNKNOWN LIGAND


Num. of mol.: 2 / Source method: obtained synthetically / Feature type: SUBJECT OF INVESTIGATION
#5: Chemical ChemComp-Q5B / (3S)-citryl-Coenzyme A / (2~{S})-2-[2-[2-[3-[[(2~{R})-4-[[[(2~{R},3~{S},4~{R},5~{R})-5-(6-aminopurin-9-yl)-4-oxidanyl-3-phosphonooxy-oxolan-2-yl]methoxy-oxidanyl-phosphoryl]oxy-oxidanyl-phosphoryl]oxy-3,3-dimethyl-2-oxidanyl-butanoyl]amino]propanoylamino]ethylsulfanyl]-2-oxidanylidene-ethyl]-2-oxidanyl-butanedioic acid


Mass: 941.642 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: C27H42N7O22P3S
#6: Chemical ChemComp-PO4 / PHOSPHATE ION


Mass: 94.971 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: PO4
#7: Chemical ChemComp-ADP / ADENOSINE-5'-DIPHOSPHATE


Mass: 427.201 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C10H15N5O10P2 / Comment: ADP, energy-carrying molecule*YM
#8: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 90 / Source method: isolated from a natural source / Formula: H2O

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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: ACLY D1026A mutant in complex with CoA and citrate / Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT
Molecular weightValue: 0.48 MDa / Experimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Escherichia coli (E. coli)
Buffer solutionpH: 7.5
SpecimenConc.: 4.5 mg/ml / Embedding 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: 2000 nm / Nominal defocus min: 1000 nm
Image recordingElectron dose: 40 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 2.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 183036 / Symmetry type: POINT
Atomic model buildingProtocol: OTHER
RefinementHighest resolution: 2.8 Å

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