PDBe 5k14

X-ray diffraction
2.4Å resolution

Function and Biology Details

Reactions catalysed:
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. 
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. 
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
hetero dimer (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Reverse transcriptase/ribonuclease H Chain: A
Molecule details ›
Chain: A
Length: 560 amino acids
Theoretical weight: 64.56 KDa
Source organism: HIV-1 M:B_HXB2R
Expression system: Escherichia coli BL21(DE3)
  • Canonical: P04585 (Residues: 588-1147; Coverage: 39%)
Gene name: gag-pol
Sequence domains:
p51 RT Chain: B
Molecule details ›
Chain: B
Length: 440 amino acids
Theoretical weight: 51.4 KDa
Source organism: Human immunodeficiency virus type 1 lw12.3 isolate
Expression system: Escherichia coli
  • Canonical: P0C6F2 (Residues: 588-1027; Coverage: 31%)
Gene name: gag-pol
Sequence domains:

Ligands and Environments

1 bound ligand:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ALS BEAMLINE 5.0.1
Spacegroup: C2221
Unit cell:
a: 118.753Å b: 154.577Å c: 153.797Å
α: 90° β: 90° γ: 90°
R R work R free
0.207 0.205 0.261
Expression systems:
  • Escherichia coli BL21(DE3)
  • Escherichia coli