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3ZLX

Crystal structure of MEK1 in complex with fragment 18

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
DUAL SPECIFICITY MITOGEN-ACTIVATED PROTEIN KINASE KINASE 1polymer34838916.91UniProt (Q02750)
Pfam (PF00069)
HOMO SAPIENS (HUMAN)MAP KINASE KINASE 1, MAPKK 1, MKK1, ERK ACTIVATOR KINASE 1, MAPK/ERK KINASE 1, MEK 1, MEK1
2B
(A)
7-choro-6-[(3R)-pyrrolidin-3-ylmethoxy]isoquinolin-1(2H)-onenon-polymer278.71Chemie (5EZ)
PubChem (73348939)
3C
(A)
waterwater18.091Chemie (HOH)
Sequence modifications
A: 37 - 383 (UniProt: Q02750)
PDBExternal DatabaseDetails
Gly 36-expression tag
Asn 298Ser 298engineered mutation
Lys 299Ser 299engineered mutation
Lys 300Tyr 300engineered mutation
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains1
Total formula weight38916.9
Non-Polymers*Number of molecules1
Total formula weight278.7
All*Total formula weight39195.6
*Water molecules are not included.

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PDB entries from 2026-03-25

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