PDBe 3blq

X-ray diffraction
2.9Å resolution

Crystal Structure of Human CDK9/cyclinT1 in Complex with ATP

Released:

Function and Biology Details

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

Structure analysis Details

Assembly composition:
hetero dimer (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Cyclin-T1 Chain: B
Molecule details ›
Chain: B
Length: 260 amino acids
Theoretical weight: 30.12 KDa
Source organism: Homo sapiens
Expression system: Spodoptera frugiperda
UniProt:
  • Canonical: O60563 (Residues: 2-259; Coverage: 36%)
Gene name: CCNT1
Sequence domains: Cyclin, N-terminal domain
Structure domains: Cyclin A; domain 1
Cyclin-dependent kinase 9 Chain: A
Molecule details ›
Chain: A
Length: 331 amino acids
Theoretical weight: 38.05 KDa
Source organism: Homo sapiens
Expression system: Spodoptera frugiperda
UniProt:
  • Canonical: P50750 (Residues: 2-330; Coverage: 88%)
Gene names: CDC2L4, CDK9, TAK
Sequence domains: Protein kinase domain
Structure domains:

Ligands and Environments

3 bound ligands:

1 modified residue:

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE ID14-2
Spacegroup: R3
Unit cell:
a: 173.13Å b: 173.13Å c: 95.64Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.174 0.174 0.234
Expression system: Spodoptera frugiperda