2x2d

X-ray diffraction
1.95Å resolution

acetyl-CypA:HIV-1 N-term capsid domain complex

Released:

Function and Biology Details

Reactions catalysed:
Peptidylproline (omega=180) = peptidylproline (omega=0)
Deoxynucleoside triphosphate + DNA(n) = diphosphate + DNA(n+1)
3'-end directed exonucleolytic cleavage of viral RNA-DNA hybrid
Endohydrolysis of RNA in RNA/DNA hybrids. Three different cleavage modes: 1. sequence-specific internal cleavage of RNA. Human immunodeficiency virus type 1 and Moloney murine leukemia virus enzymes prefer to cleave the RNA strand one nucleotide away from the RNA-DNA junction. 2. RNA 5'-end directed cleavage 13-19 nucleotides from the RNA end. 3. DNA 3'-end directed cleavage 15-20 nucleotides away from the primer terminus.
Specific for a P1 residue that is hydrophobic, and P1' variable, but often Pro.
Biochemical function:
Biological process:
Cellular component:

Structure analysis Details

Assembly composition:
hetero dimer (preferred)
PDBe Complex ID:
PDB-CPX-146203 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Peptidyl-prolyl cis-trans isomerase A Chains: B, C
Molecule details ›
Chains: B, C
Length: 165 amino acids
Theoretical weight: 18.08 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P62937 (Residues: 1-165; Coverage: 100%)
Gene names: CYPA, PPIA
Sequence domains: Cyclophilin type peptidyl-prolyl cis-trans isomerase/CLD
Structure domains: Cyclophilin-like
Matrix protein p17 Chains: D, E
Molecule details ›
Chains: D, E
Length: 147 amino acids
Theoretical weight: 16.34 KDa
Source organism: Human immunodeficiency virus 1
UniProt:
  • Canonical: P12497 (Residues: 132-278; Coverage: 10%)
Gene name: gag-pol
Structure domains: Human Immunodeficiency Virus Type 1 Capsid Protein

Ligands and Environments

No bound ligands
1 modified residue:

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE ID29
Spacegroup: P21
Unit cell:
a: 38.542Å b: 109.995Å c: 67.567Å
α: 90° β: 101.11° γ: 90°
R-values:
R R work R free
0.2 0.197 0.257
Expression system: Escherichia coli BL21(DE3)