4k96

X-ray diffraction
2.08Å resolution

Structure of Binary Complex of cGAS with Bound dsDNA

Released:

Function and Biology Details

Reaction catalysed:
(1a) ATP + GTP = pppG-P(2'-5')A + diphosphate
Biochemical function:
  • not assigned
Biological process:
  • not assigned
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
hetero trimer (preferred)
PDBe Complex ID:
PDB-CPX-117724 (preferred)
Entry contents:
1 distinct polypeptide molecule
2 distinct DNA molecules
Macromolecules (3 distinct):
Cyclic GMP-AMP synthase Chains: A, B
Molecule details ›
Chains: A, B
Length: 362 amino acids
Theoretical weight: 42.51 KDa
Source organism: Mus musculus
Expression system: Escherichia coli
UniProt:
  • Canonical: Q8C6L5 (Residues: 147-507; Coverage: 71%)
Gene names: Cgas, Mb21d1
Sequence domains:
Structure domains:
DNA-F Chains: E, G
Molecule details ›
Chains: E, G
Length: 17 nucleotides
Theoretical weight: 5.25 KDa
Source organism: Mus musculus
Expression system: Not provided
DNA-R Chains: F, H
Molecule details ›
Chains: F, H
Length: 17 nucleotides
Theoretical weight: 5.16 KDa
Source organism: Mus musculus
Expression system: Not provided

Ligands and Environments

1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: NSLS BEAMLINE X29A
Spacegroup: C2
Unit cell:
a: 181.91Å b: 93.801Å c: 75.509Å
α: 90° β: 97.72° γ: 90°
R-values:
R R work R free
0.202 0.202 0.226
Expression systems:
  • Escherichia coli
  • Not provided