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3IGC

Smallpox virus topoisomerase-DNA transition state

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
DNA topoisomerase 1polymer31436617.41UniProt (P32989)
Pfam (PF09266)
Pfam (PF01028)
Variola virus (smallpox virus)DNA topoisomerase I
2B
(B)
5'-D(*GP*TP*GP*TP*CP*GP*CP*CP*CP*TP*T)-3'polymer113316.21
3C
(C)
5'-D(*AP*TP*TP*CP*C)-3'polymer51455.01
4D
(D)
5'-D(*CP*GP*GP*AP*AP*TP*AP*AP*GP*GP*GP*CP*GP*AP*CP*A)-3'polymer164981.31
5E
(A)
VANADATE IONnon-polymer114.91Chemie (VO4)
6F, G, H, I
(A, B, C, D)
waterwater18.0426Chemie (HOH)
Sequence modifications
A: 1 - 314 (UniProt: P32989)
PDBExternal DatabaseDetails
Ser 100Cys 100engineered mutation
Ser 211Cys 211engineered mutation
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains4
Total formula weight46369.9
Non-Polymers*Number of molecules1
Total formula weight114.9
All*Total formula weight46484.8
*Water molecules are not included.

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PDB entries from 2025-06-18

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