1hiw

X-ray diffraction
2.3Å resolution

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.
Biochemical function:
Biological process:
  • not assigned
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
homo trimer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-146234 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Matrix protein p17 Chains: A, B, C, Q, R, S
Molecule details ›
Chains: A, B, C, Q, R, S
Length: 133 amino acids
Theoretical weight: 15 KDa
Source organism: Human immunodeficiency virus 1
Expression system: Escherichia coli
UniProt:
  • Canonical: P12497 (Residues: 1-132; Coverage: 9%)
Gene name: gag-pol
Sequence domains: gag gene protein p17 (matrix protein)
Structure domains: Immunodeficiency lentiviruses, gag gene matrix protein p17

Ligands and Environments

1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
Spacegroup: P21
Unit cell:
a: 64.423Å b: 91.163Å c: 73.997Å
α: 90° β: 102.91° γ: 90°
R-values:
R R work R free
0.259 0.259 0.332
Expression system: Escherichia coli