3fiv

X-ray diffraction
1.85Å resolution

CRYSTAL STRUCTURE OF FELINE IMMUNODEFICIENCY VIRUS PROTEASE COMPLEXED WITH A SUBSTRATE

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.
dUTP + H(2)O = dUMP + diphosphate
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
hetero tetramer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-147604 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Protease Chains: A, B
Molecule details ›
Chains: A, B
Length: 116 amino acids
Theoretical weight: 13.28 KDa
Source organism: Feline immunodeficiency virus
Expression system: Escherichia coli
UniProt:
  • Canonical: P16088 (Residues: 39-154; Coverage: 10%)
Gene name: pol
Sequence domains: Retroviral aspartyl protease
Structure domains: Acid Proteases
ACE-ALN-VAL-LEU-ALA-GLU-ALN-NH2 Chains: I, J
Molecule details ›
Chains: I, J
Length: 8 amino acids
Theoretical weight: 849 Da
Source organism: Feline immunodeficiency virus
Expression system: Not provided

Ligands and Environments

1 bound ligand:
2 modified residues:

Experiments and Validation Details

Entry percentile scores
X-ray source: ENRAF-NONIUS FR591
Spacegroup: P31
Unit cell:
a: 50.89Å b: 50.89Å c: 74.53Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.172 0.172 not available
Expression systems:
  • Escherichia coli
  • Not provided