3v4y

X-ray diffraction
2.1Å resolution

Crystal Structure of the first Nuclear PP1 holoenzyme

Released:

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero dimer (preferred)
PDBe Complex ID:
PDB-CPX-158555 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Serine/threonine-protein phosphatase PP1-alpha catalytic subunit Chains: A, C, E, G
Molecule details ›
Chains: A, C, E, G
Length: 306 amino acids
Theoretical weight: 34.94 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Canonical: P62136 (Residues: 7-307; Coverage: 91%)
Gene names: PPP1A, PPP1CA
Sequence domains:
Structure domains: Purple Acid Phosphatase; chain A, domain 2
Nuclear inhibitor of protein phosphatase 1 Chains: B, D, F, H
Molecule details ›
Chains: B, D, F, H
Length: 62 amino acids
Theoretical weight: 7.21 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Canonical: Q12972 (Residues: 158-216; Coverage: 17%)
Gene names: ARD1, NIPP1, PPP1R8
Structure domains: Single alpha-helices involved in coiled-coils or other helix-helix interfaces

Ligands and Environments

3 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: NSLS BEAMLINE X25
Spacegroup: P212121
Unit cell:
a: 76.639Å b: 116.035Å c: 168.093Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.156 0.154 0.196
Expression system: Escherichia coli