Structure analysis

Crystal structure of the human CDK12-cyclinK complex

X-ray diffraction
3.15Å resolution
Source organism: Homo sapiens
Assembly composition:
hetero dimer (preferred)
Entry contents: 2 distinct polypeptide molecules

Assemblies

Assembly 1 (preferred)
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Multimeric state: hetero dimer
Accessible surface area: 24110.15 Å2
Buried surface area: 1951.64 Å2
Dissociation area: 975.82 Å2
Dissociation energy (ΔGdiss): 0.27 kcal/mol
Dissociation entropy (TΔSdiss): 12.86 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-131171
Complex Portal ID: CPX-241
Assembly 2
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Multimeric state: hetero dimer
Accessible surface area: 23332.82 Å2
Buried surface area: 1394.51 Å2
Dissociation area: 697.25 Å2
Dissociation energy (ΔGdiss): -0.69 kcal/mol
Dissociation entropy (TΔSdiss): 12.61 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-131171
Complex Portal ID: CPX-241

Macromolecules

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
Pfam:
InterPro:
CATH: Cyclin-like

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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
Pfam: Protein kinase domain
InterPro:
CATH:

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