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12XE

Crystal structure of KRAS(Q61K) bound to GppNHp and ligand

This is a non-PDB format compatible entry.
Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
Isoform 2B of GTPase KRaspolymer17019329.91UniProt (P01116)
Pfam (PF00071)
Homo sapiens (human)K-Ras 2,Ki-Ras,c-K-ras,c-Ki-ras
2B
(A)
(4P)-5-ethynyl-6-fluoro-4-(8-fluoro-2-{[(2R,4R,7aS)-2-fluorotetrahydro-1H-pyrrolizin-7a(5H)-yl]methoxy}-4-{(1R,5S)-8-[(1-methyl-1H-imidazol-4-yl)methyl]-3,8-diazabicyclo[3.2.1]octan-3-yl}pyrido[4,3-d]pyrimidin-7-yl)naphthalen-2-olnon-polymer694.71Chemie (A1DEM)
3C
(A)
PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTERnon-polymer522.21Chemie (GNP)
4D
(A)
GLYCEROLnon-polymer92.11Chemie (GOL)
PubChem (753)
5E
(A)
MAGNESIUM IONnon-polymer24.31Chemie (MG)
PubChem (888)
6F
(A)
waterwater18.0139Chemie (HOH)
Sequence modifications
A: 1 - 169 (UniProt: P01116)
PDBExternal DatabaseDetails
Gly 0-expression tag
Lys 61Gln 61engineered mutation
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains1
Total formula weight19329.9
Non-Polymers*Number of molecules4
Total formula weight1333.3
All*Total formula weight20663.2
*Water molecules are not included.

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PDB entries from 2026-09-02

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