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8ECR

KRAS4B 1-185 (C185S) bound to GDP-Mg2+

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, B
(A, B)
GTPase KRaspolymer18521100.12UniProt (P01116)
Pfam (PF00071)
Homo sapiens (human)K-Ras 2,Ki-Ras,c-K-ras,c-Ki-ras
2C, F
(A, B)
MAGNESIUM IONnon-polymer24.32Chemie (MG)
PubChem (888)
3D, G
(A, B)
GUANOSINE-5'-DIPHOSPHATEnon-polymer443.22Chemie (GDP)
4E
(A)
GLYCEROLnon-polymer92.11Chemie (GOL)
PubChem (753)
5H, I
(A, B)
waterwater18.0327Chemie (HOH)
Sequence modifications
A, B: 1 - 185 (UniProt: P01116)
PDBExternal DatabaseDetails
Ser 185Cys 185engineered mutation
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains2
Total formula weight42200.1
Non-Polymers*Number of molecules5
Total formula weight1027.1
All*Total formula weight43227.2
*Water molecules are not included.

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PDB entries from 2026-06-10

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