3gga

X-ray diffraction
2.5Å resolution

Function and Biology Details

Reactions catalysed:
Deoxynucleoside triphosphate + DNA(n) = diphosphate + DNA(n+1)
Specific for a P1 residue that is hydrophobic, and P1' variable, but often Pro.
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.
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Protease Chains: A, B, C, D, G, H
Molecule details ›
Chains: A, B, C, D, G, H
Length: 99 amino acids
Theoretical weight: 10.8 KDa
Source organism: Human immunodeficiency virus 1
Expression system: Escherichia coli
UniProt:
  • Canonical: P03366 (Residues: 501-599; Coverage: 7%)
Gene name: gag-pol
Sequence domains: Retroviral aspartyl protease
Structure domains: Acid Proteases

Ligands and Environments

1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 17-ID
Spacegroup: P21
Unit cell:
a: 67.08Å b: 61.504Å c: 87.684Å
α: 90° β: 111.12° γ: 90°
R-values:
R R work R free
0.228 0.226 0.275
Expression system: Escherichia coli