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23FC

Cryo-EM structure of human ATR-ATRIP complex with ATPgammaS and Chk1

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, B
(A, B)
Serine/threonine-protein kinase ATRpolymer2644301756.82UniProt (Q13535)
Pfam (PF25032)
Pfam (PF08064)
Pfam (PF25030)
Pfam (PF02259)
Pfam (PF23593)
Pfam (PF00454)
Pfam (PF02260)
Homo sapiens (human)Ataxia telangiectasia and Rad3-related protein,FRAP-related protein 1
2C, D
(C, D)
ATR-interacting proteinpolymer79185940.72UniProt (Q8WXE1)Homo sapiens (human)ATM and Rad3-related-interacting protein
3E, F
(E, F)
Serine/threonine-protein kinase Chk1polymer141550.72UniProt (O14757)Homo sapiensCHK1 checkpoint homolog,Cell cycle checkpoint kinase,Checkpoint kinase-1
4G, K
(A, B)
PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTERnon-polymer523.22Chemie (AGS)
5H, I, L, M
(A, B)
MAGNESIUM IONnon-polymer24.34Chemie (MG)
PubChem (888)
6J, N, O, P
(A, B, C, D)
ZINC IONnon-polymer65.44Chemie (ZN)
PubChem (32051)
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains6
Total formula weight778496.3
Non-Polymers*Number of molecules10
Total formula weight1405.3
All*Total formula weight779901.7
*Water molecules are not included.

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PDB entries from 2026-05-20

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