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4EWQ

Human p38 alpha MAPK in complex with a pyridazine based inhibitor

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
Mitogen-activated protein kinase 14polymer38344035.91UniProt (Q16539)
Pfam (PF00069)
Homo sapiens (human)MAP kinase 14, MAPK 14, Cytokine suppressive anti-inflammatory drug-binding protein, CSAID-binding protein, CSBP, MAP kinase MXI2, MAX-interacting protein 2, Mitogen-activated protein kinase p38 alpha, MAP kinase p38 alpha, Stress-activated protein kinase 2a, SAPK2a
2B
(A)
4-[3-(4-FLUOROPHENYL)-1H-PYRAZOL-4-YL]PYRIDINEnon-polymer239.21Chemie (GG5)
3C, D
(A)
3-phenyl-4-(pyridin-4-yl)-6-[4-(pyrimidin-2-yl)piperazin-1-yl]pyridazinenon-polymer395.52Chemie (MWL)
4E
(A)
ZINC IONnon-polymer65.41Chemie (ZN)
5F
(A)
CHLORIDE IONnon-polymer35.51Chemie (CL)
6G
(A)
BETA-MERCAPTOETHANOLnon-polymer78.11Chemie (BME)
7H
(A)
GLYCEROLnon-polymer92.11Chemie (GOL)
8I
(A)
ACETATE IONnon-polymer59.01Chemie (ACT)
9J
(A)
DI(HYDROXYETHYL)ETHERnon-polymer106.11Chemie (PEG)
10K
(A)
waterwater18.0120Chemie (HOH)
Sequence modifications
A: 2 - 360 (UniProt: Q16539)
PDBExternal DatabaseDetails
Met -22-expression tag
His -21-expression tag
His -20-expression tag
His -19-expression tag
His -18-expression tag
His -17-expression tag
His -16-expression tag
Ser -15-expression tag
Ser -14-expression tag
Gly -13-expression tag
Val -12-expression tag
Asp -11-expression tag
Leu -10-expression tag
Gly -9-expression tag
Thr -8-expression tag
Glu -7-expression tag
Asn -6-expression tag
Leu -5-expression tag
Tyr -4-expression tag
Phe -3-expression tag
Gln -2-expression tag
Ser -1-expression tag
Asn 0-expression tag
Ala 1-expression tag
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains1
Total formula weight44035.9
Non-Polymers*Number of molecules9
Total formula weight1466.4
All*Total formula weight45502.3
*Water molecules are not included.

239149

PDB entries from 2025-07-23

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