4un0

X-ray diffraction
3.15Å resolution

Crystal structure of the human CDK12-cyclinK complex

Released:

Function and Biology Details

Reactions catalysed:
ATP + a protein = ADP + a phosphoprotein
ATP + [DNA-directed RNA polymerase] = ADP + [DNA-directed RNA polymerase] phosphate
Biochemical function:
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
hetero dimer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-131171 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Cyclin-K Chains: A, B
Molecule details ›
Chains: A, B
Length: 259 amino acids
Theoretical weight: 30.44 KDa
Source organism: Homo sapiens
Expression system: Spodoptera frugiperda
UniProt:
  • Canonical: O75909 (Residues: 11-267; Coverage: 44%)
Gene names: CCNK, CPR4
Sequence domains:
Structure domains: Cyclin-like
Cyclin-dependent kinase 12 Chains: C, D
Molecule details ›
Chains: C, D
Length: 326 amino acids
Theoretical weight: 37.82 KDa
Source organism: Homo sapiens
Expression system: Spodoptera frugiperda
UniProt:
  • Canonical: Q9NYV4 (Residues: 715-1038; Coverage: 22%)
Gene names: CDK12, CRK7, CRKRS, KIAA0904
Sequence domains: Protein kinase domain
Structure domains:

Ligands and Environments

No bound ligands
1 modified residue:

Experiments and Validation Details

Entry percentile scores
X-ray source: DIAMOND BEAMLINE I24
Spacegroup: P21
Unit cell:
a: 49.58Å b: 148.78Å c: 92.15Å
α: 90° β: 94.22° γ: 90°
R-values:
R R work R free
0.217 0.215 0.271
Expression system: Spodoptera frugiperda