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3PP1

Crystal Structure of the Human Mitogen-activated protein kinase kinase 1 (MEK 1) in complex with ligand and MgATP

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
Dual specificity mitogen-activated protein kinase kinase 1polymer32836640.21UniProt (Q02750)
Pfam (PF00069)
Homo sapiens (human)MAP kinase kinase 1, MAPKK 1, ERK activator kinase 1, MAPK/ERK kinase 1, MEK 1
2B
(A)
ADENOSINE-5'-TRIPHOSPHATEnon-polymer507.21Chemie (ATP)
3C
(A)
MAGNESIUM IONnon-polymer24.31Chemie (MG)
4D
(A)
3-[(2R)-2,3-dihydroxypropyl]-6-fluoro-5-[(2-fluoro-4-iodophenyl)amino]-8-methylpyrido[2,3-d]pyrimidine-4,7(3H,8H)-dionenon-polymer504.21Chemie (IZG)
5E
(A)
ACETATE IONnon-polymer59.01Chemie (ACT)
6F
(A)
waterwater18.068Chemie (HOH)
Sequence modifications
A: 62 - 382 (UniProt: Q02750)
PDBExternal DatabaseDetails
Met 61-initiating methionine
His 383-expression tag
His 384-expression tag
His 385-expression tag
His 386-expression tag
His 387-expression tag
His 388-expression tag
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains1
Total formula weight36640.2
Non-Polymers*Number of molecules4
Total formula weight1094.8
All*Total formula weight37735.0
*Water molecules are not included.

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PDB entries from 2025-06-18

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