PDBe 3v00

X-ray diffraction
2.9Å resolution

Studies of a constitutively active G-alpha subunit provide insights into the mechanism of G protein activation.

Released:

Function and Biology Details

Structure analysis Details

Assemblies composition:
monomeric (preferred)
homo hexamer
homo trimer
homo dimer
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Guanine nucleotide-binding protein G(i) subunit alpha-1; Guanine nucleotide-binding protein G(t) subunit alpha-1 Chains: A, B, C
Molecule details ›
Chains: A, B, C
Length: 356 amino acids
Theoretical weight: 41 KDa
Source organisms: Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P10824 (Residues: 220-247, 256-299; Coverage: 20%)
  • Canonical: P04695 (Residues: 1-215, 244-251, 296-350; Coverage: 79%)
  • nullnull
Gene names: GNAT1, Gnai-1, Gnai1
Sequence domains: G-protein alpha subunit
Structure domains:

Ligands and Environments

1 bound ligand:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: CHESS BEAMLINE A1
Spacegroup: P43212
Unit cell:
a: 93.173Å b: 93.173Å c: 380.58Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.221 0.221 0.272
Expression system: Escherichia coli BL21(DE3)