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- PDB-8xj2: MAT2A in complex with SAM and allosteric inhibitor SCR-7952 -

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Basic information

Entry
Database: PDB / ID: 8xj2
TitleMAT2A in complex with SAM and allosteric inhibitor SCR-7952
ComponentsS-adenosylmethionine synthase isoform type-2
KeywordsANTITUMOR PROTEIN / methionine adenosyltransferase / cancer / SAM
Function / homology
Function and homology information


methionine adenosyltransferase complex / methionine adenosyltransferase / methionine adenosyltransferase activity / S-adenosylmethionine biosynthetic process / protein heterooligomerization / Methylation / cellular response to methionine / protein hexamerization / small molecule binding / positive regulation of TORC1 signaling ...methionine adenosyltransferase complex / methionine adenosyltransferase / methionine adenosyltransferase activity / S-adenosylmethionine biosynthetic process / protein heterooligomerization / Methylation / cellular response to methionine / protein hexamerization / small molecule binding / positive regulation of TORC1 signaling / one-carbon metabolic process / cellular response to leukemia inhibitory factor / ATP binding / metal ion binding / identical protein binding / cytosol
Similarity search - Function
S-adenosylmethionine synthetase / S-adenosylmethionine synthetase, N-terminal / S-adenosylmethionine synthetase, central domain / S-adenosylmethionine synthetase, C-terminal / S-adenosylmethionine synthetase, conserved site / S-adenosylmethionine synthetase superfamily / S-adenosylmethionine synthetase, N-terminal domain / S-adenosylmethionine synthetase, central domain / S-adenosylmethionine synthetase, C-terminal domain / S-adenosylmethionine synthase signature 1. / S-adenosylmethionine synthase signature 2.
Similarity search - Domain/homology
: / S-ADENOSYLMETHIONINE / S-adenosylmethionine synthase isoform type-2
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.16 Å
AuthorsZhou, F.
Funding support1items
OrganizationGrant numberCountry
Not funded
CitationJournal: To Be Published
Title: MAT2A in complex with SAM and allosteric inhibitor SCR-7952
Authors: Zhou, F.
History
DepositionDec 20, 2023Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Dec 25, 2024Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: S-adenosylmethionine synthase isoform type-2
B: S-adenosylmethionine synthase isoform type-2
C: S-adenosylmethionine synthase isoform type-2
D: S-adenosylmethionine synthase isoform type-2
hetero molecules


Theoretical massNumber of molelcules
Total (without water)177,08310
Polymers174,8834
Non-polymers2,2006
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein
S-adenosylmethionine synthase isoform type-2 / AdoMet synthase 2 / Methionine adenosyltransferase 2 / MAT 2 / Methionine adenosyltransferase II / MAT-II


Mass: 43720.625 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: MAT2A, AMS2, MATA2 / Production host: Homo sapiens (human) / References: UniProt: P31153, methionine adenosyltransferase
#2: Chemical
ChemComp-A1LVL / 7-chloranyl-5-(2-cyclopropylpyridin-3-yl)-1-methyl-imidazo[4,5-c]quinolin-4-one


Mass: 350.802 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C19H15ClN4O / Feature type: SUBJECT OF INVESTIGATION
#3: Chemical ChemComp-SAM / S-ADENOSYLMETHIONINE


Mass: 398.437 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C15H22N6O5S
Has ligand of interestY
Has protein modificationN

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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: Complex of MAT2A with SAM and allosteric inhibitor SCR-7952
Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 7.4
SpecimenConc.: 1 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: 5000 nm / Nominal defocus min: 1200 nm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

CTF correctionType: NONE
3D reconstructionResolution: 3.16 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 679996 / Symmetry type: POINT

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