1a35

X-ray diffraction
2.5Å resolution

HUMAN TOPOISOMERASE I/DNA COMPLEX

Released:

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero trimer (preferred)
PDBe Complex ID:
PDB-CPX-113390 (preferred)
Entry contents:
1 distinct polypeptide molecule
2 distinct DNA molecules
Macromolecules (3 distinct):
DNA topoisomerase 1 Chain: A
Molecule details ›
Chain: A
Length: 591 amino acids
Theoretical weight: 70.02 KDa
Source organism: Homo sapiens
Expression system: Spodoptera frugiperda
UniProt:
  • Canonical: P11387 (Residues: 175-765; Coverage: 77%)
Gene name: TOP1
Sequence domains:
Structure domains:
DNA (5'-D(*AP*AP*AP*AP*AP*GP*AP*CP*TP*TP*AP*GP*AP*AP*AP*AP*AP*(BRU)P*(BRU)P*TP*TP*T)-3') Chain: C
Molecule details ›
Chain: C
Length: 22 nucleotides
Theoretical weight: 6.92 KDa
Source organism: Homo sapiens
Expression system: Not provided
DNA (5'-D(*AP*AP*AP*AP*AP*TP*+UP*+UP*+UP*+UP*CP*+UP*AP*AP*GP*TP*CP*TP*TP*TP*+ UP*T)-3') Chain: D
Molecule details ›
Chain: D
Length: 22 nucleotides
Theoretical weight: 7.09 KDa
Source organism: Homo sapiens
Expression system: Not provided

Ligands and Environments

No bound ligands
1 modified residue:

Experiments and Validation Details

Entry percentile scores
X-ray source: NSLS BEAMLINE X4A
Spacegroup: P21
Unit cell:
a: 71.8Å b: 66.3Å c: 71.8Å
α: 90° β: 98.4° γ: 90°
R-values:
R R work R free
0.209 0.209 0.308
Expression systems:
  • Spodoptera frugiperda
  • Not provided