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1XSN

Crystal Structure of human DNA polymerase lambda in complex with a one nucleotide DNA gap and ddTTP

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(T)
5'-D(*CP*GP*GP*CP*AP*AP*TP*AP*CP*TP*G)-3'polymer113358.21
2B
(P)
5'-D(*CP*AP*GP*TP*AP*(2DT))-3'polymer61792.21
3C
(D)
5'-D(P*GP*CP*CP*G)-3'polymer41191.81
4D
(A)
DNA polymerase lambdapolymer33537447.71UniProt (Q9UGP5)
Pfam (PF14716)
Pfam (PF10391)
Pfam (PF14792)
Pfam (PF14791)
Homo sapiens (human)Pol Lambda, DNA polymerase beta-2, Pol beta2
5E, F, G, H
(T, P)
1,2-ETHANEDIOLnon-polymer62.14Chemie (EDO)
6I
(A)
MAGNESIUM IONnon-polymer24.31Chemie (MG)
7J, K
(A)
SODIUM IONnon-polymer23.02Chemie (NA)
8L
(A)
2',3'-DIDEOXY-THYMIDINE-5'-TRIPHOSPHATEnon-polymer466.21Chemie (D3T)
9M, N, O, P
(T, P, D, A)
waterwater18.0327Chemie (HOH)
Sequence modifications
A: 242 - 575 (UniProt: Q9UGP5)
PDBExternal DatabaseDetails
Met 241-initiating methionine
Ala 543Cys 543engineered mutation
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains4
Total formula weight43789.9
Non-Polymers*Number of molecules8
Total formula weight784.7
All*Total formula weight44574.7
*Water molecules are not included.

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PDB entries from 2025-07-23

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