4qj7

X-ray diffraction
1.67Å resolution

Crystal structure of inactive HIV-1 protease variant (I50V/A71V) in complex with p1-p6 substrate variant (R452S)

Released:

Function and Biology Details

Reactions catalysed:
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.
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
hetero trimer (preferred)
PDBe Complex ID:
PDB-CPX-136815 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Protease Chains: A, B, C, D
Molecule details ›
Chains: A, B, C, D
Length: 99 amino acids
Theoretical weight: 10.83 KDa
Source organism: HIV-1 M:B_ARV2/SF2
Expression system: Escherichia coli
UniProt:
  • Canonical: P03369 (Residues: 491-589; Coverage: 7%)
Gene name: gag-pol
Sequence domains: Retroviral aspartyl protease
Structure domains: Acid Proteases
Spacer peptide 2 Chains: F, G
Molecule details ›
Chains: F, G
Length: 10 amino acids
Theoretical weight: 1.1 KDa
Source organism: HIV-1 M:B_ARV2/SF2
Expression system: Not provided
UniProt:
  • Canonical: P03349 (Residues: 446-455; Coverage: 2%)
Gene name: gag

Ligands and Environments

2 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 21-ID-F
Spacegroup: P21
Unit cell:
a: 51.597Å b: 58.162Å c: 61.758Å
α: 90° β: 95.8° γ: 90°
R-values:
R R work R free
0.181 0.178 0.229
Expression systems:
  • Escherichia coli
  • Not provided