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4H3Q

Crystal structure of human ERK2 complexed with a MAPK docking peptide

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
Mitogen-activated protein kinase 1polymer36241372.51UniProt (P28482)
Pfam (PF00069)
Homo sapiens (human)MAP kinase 1, MAPK 1, ERT1, Extracellular signal-regulated kinase 2, ERK-2, MAP kinase isoform p42, p42-MAPK, Mitogen-activated protein kinase 2, MAP kinase 2, MAPK 2
2B
(B)
Dual specificity mitogen-activated protein kinase kinase 2polymer131477.81UniProt (P36507)Homo sapiensMAP kinase kinase 2, MAPKK 2, ERK activator kinase 2, MAPK/ERK kinase 2, MEK 2
3C
(A)
PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTERnon-polymer506.21Chemie (ANP)
4D, E
(A, B)
waterwater18.084Chemie (HOH)
Sequence modifications
A: 1 - 360 (UniProt: P28482)
PDBExternal DatabaseDetails
Gly -1-expression tag
Ser 0-expression tag
Ala 77Arg 77engineered mutation
Ser 161Cys 161engineered mutation
Gly 255Ile 255engineered mutation
Ala 314Glu 314engineered mutation
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains2
Total formula weight42850.3
Non-Polymers*Number of molecules1
Total formula weight506.2
All*Total formula weight43356.5
*Water molecules are not included.

247947

PDB entries from 2026-01-21

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