1ytj

X-ray diffraction
2.5Å resolution

SIV PROTEASE CRYSTALLIZED WITH PEPTIDE PRODUCT

Released:
Primary publication:
Three-dimensional structures of HIV-1 and SIV protease product complexes.
Biochemistry 35 12933-44 (1996)
PMID: 8841139

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 tetramer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-138833 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Protease Chain: A
Molecule details ›
Chain: A
Length: 99 amino acids
Theoretical weight: 10.77 KDa
Source organism: Simian immunodeficiency virus
Expression system: PTAC-TAC
UniProt:
  • Canonical: P05896 (Residues: 498-596; Coverage: 7%)
Gene name: gag-pol
Sequence domains: Retroviral aspartyl protease
Structure domains: Acid Proteases
PEPTIDE PRODUCT Chain: I
Molecule details ›
Chain: I
Length: 5 amino acids
Theoretical weight: 611 Da
Source organism: Simian immunodeficiency virus
Expression system: Not provided

Ligands and Environments

No bound ligands
2 modified residues:

Experiments and Validation Details

Entry percentile scores
Spacegroup: C2221
Unit cell:
a: 62.3Å b: 32.1Å c: 96.3Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.174 0.174 0.285
Expression system: Not provided