4or5

X-ray diffraction
2.9Å resolution

Crystal structure of HIV-1 Tat complexed with human P-TEFb and AFF4

Released:

Function and Biology Details

Reactions catalysed:
ATP + a protein = ADP + a phosphoprotein
ATP + [DNA-directed RNA polymerase] = ADP + [DNA-directed RNA polymerase] phosphate
Biological process:
Cellular component:

Structure analysis Details

Assembly composition:
hetero tetramer (preferred)
PDBe Complex ID:
PDB-CPX-130019 (preferred)
Entry contents:
4 distinct polypeptide molecules
Macromolecules (4 distinct):
Cyclin-dependent kinase 9 Chains: A, F
Molecule details ›
Chains: A, F
Length: 326 amino acids
Theoretical weight: 37.54 KDa
Source organism: Homo sapiens
Expression system: Not provided
UniProt:
  • Canonical: P50750 (Residues: 7-332; Coverage: 88%)
Gene names: CDC2L4, CDK9, TAK
Sequence domains: Protein kinase domain
Structure domains:
Cyclin-T1 Chains: B, G
Molecule details ›
Chains: B, G
Length: 266 amino acids
Theoretical weight: 30.88 KDa
Source organism: Homo sapiens
Expression system: Not provided
UniProt:
  • Canonical: O60563 (Residues: 1-266; Coverage: 37%)
Gene name: CCNT1
Sequence domains:
Structure domains: Cyclin-like
Protein Tat Chains: C, H
Molecule details ›
Chains: C, H
Length: 48 amino acids
Theoretical weight: 5.43 KDa
Source organism: HIV-1 M:B_HXB2R
Expression system: Not provided
UniProt:
  • Canonical: P04608 (Residues: 1-48; Coverage: 56%)
Gene name: tat
Sequence domains: Transactivating regulatory protein (Tat)
AF4/FMR2 family member 4 Chains: E, J
Molecule details ›
Chains: E, J
Length: 43 amino acids
Theoretical weight: 4.89 KDa
Source organism: Homo sapiens
Expression system: Not provided
UniProt:
  • Canonical: Q9UHB7 (Residues: 32-69; Coverage: 3%)
Gene names: AF5Q31, AFF4, HSPC092, MCEF

Ligands and Environments

3 bound ligands:
1 modified residue:

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 24-ID-E
Spacegroup: C2
Unit cell:
a: 166.862Å b: 186.739Å c: 108.661Å
α: 90° β: 120.24° γ: 90°
R-values:
R R work R free
0.225 0.225 0.267
Expression system: Not provided