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3OSN

Structural Basis for Proficient Incorporation of dTTP Opposite O6-Methylguanine by Human DNA Polymerase Iota

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, B
(B, C)
5'-D(*TP*CP*TP*(6OG)P*GP*GP*GP*TP*CP*CP*TP*AP*GP*GP*AP*CP*CP*(DOC))-3'polymer185506.62
2C
(A)
DNA polymerase iotapolymer42047027.31UniProt (Q9UNA4)
Pfam (PF00817)
Pfam (PF21999)
Pfam (PF11799)
Homo sapiens (human)Eta2, RAD30 homolog B
3D
(A)
THYMIDINE-5'-TRIPHOSPHATEnon-polymer482.21Chemie (TTP)
4E, G
(A)
MAGNESIUM IONnon-polymer24.32Chemie (MG)
5F
(A)
SODIUM IONnon-polymer23.01Chemie (NA)
6H, I, J
(B, C, A)
waterwater18.0271Chemie (HOH)
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains3
Total formula weight58040.5
Non-Polymers*Number of molecules4
Total formula weight553.8
All*Total formula weight58594.3
*Water molecules are not included.

239149

PDB entries from 2025-07-23

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