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1TK8

T7 DNA polymerase ternary complex with 8 oxo guanosine and dAMP at the elongation site

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(P)
5'-D(*CP*GP*AP*AP*AP*AP*CP*GP*AP*CP*GP*GP*CP*CP*AP*GP*TP*GP*CP*CP*AP*(2DA))-3'polymer226748.41
2B
(T)
5'-D(*CP*CP*CP*AP*(8OG)P*TP*GP*GP*CP*AP*CP*TP*GP*GP*CP*CP*GP*TP*CP*GP*TP*TP*TP*TP*CP*G)-3'polymer267963.11
3C
(A)
DNA polymerasepolymer69879089.81UniProt (P00581)
Pfam (PF00476)
Enterobacteria phage T7T7 DNA polymerase
4D
(B)
Thioredoxin 1polymer10811687.41UniProt (P0AA25)
Pfam (PF00085)
Escherichia coliTRX1, TRX
5E, F, G, H
(T, A)
MAGNESIUM IONnon-polymer24.34Chemie (MG)
6I, J
(A)
SULFATE IONnon-polymer96.12Chemie (SO4)
7K
(A)
2',3'-DIDEOXY-THYMIDINE-5'-TRIPHOSPHATEnon-polymer466.21Chemie (D3T)
8L
(A)
2-(N-MORPHOLINO)-ETHANESULFONIC ACIDnon-polymer195.21Chemie (MES)
9M
(A)
PENTAETHYLENE GLYCOLnon-polymer238.31Chemie (1PE)
10N, O, P, Q
(P, T, A, B)
waterwater18.0532Chemie (HOH)
Sequence modifications
A: 1 - 704 (UniProt: P00581)
PDBExternal DatabaseDetails
-Lys 118deletion
-Arg 119deletion
-Phe 120deletion
-Gly 121deletion
-Ser 122deletion
-His 123deletion
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains4
Total formula weight105488.7
Non-Polymers*Number of molecules9
Total formula weight1189.0
All*Total formula weight106677.7
*Water molecules are not included.

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PDB entries from 2025-06-18

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