6vdk

Electron Microscopy
4.5Å resolution

CryoEM structure of HIV-1 conserved Intasome Core

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

Structure analysis Details

Assembly composition:
hetero dodecamer (preferred)
PDBe Complex ID:
PDB-CPX-120754 (preferred)
Entry contents:
1 distinct polypeptide molecule
2 distinct DNA molecules
Macromolecules (3 distinct):
Integrase Chains: A, B, C, D, I, J, M, P
Molecule details ›
Chains: A, B, C, D, I, J, M, P
Length: 364 amino acids
Theoretical weight: 39.9 KDa
Source organism: Human immunodeficiency virus 1
Expression system: Escherichia coli
UniProt:
  • Canonical: P12497 (Residues: 1148-1435; Coverage: 20%)
Gene name: gag-pol
Sequence domains:
DNA (27-MER) Chains: E, G
Molecule details ›
Chains: E, G
Length: 27 nucleotides
Theoretical weight: 8.19 KDa
Source organism: Escherichia coli
Expression system: Not provided
DNA (25-MER) Chains: F, H
Molecule details ›
Chains: F, H
Length: 25 nucleotides
Theoretical weight: 7.77 KDa
Source organism: Escherichia coli
Expression system: Not provided

Ligands and Environments

2 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
Resolution: 4.5Å
Relevant EMDB volumes: EMD-21151
Expression systems:
  • Escherichia coli
  • Not provided