3ALN image
Deposition Date 2010-08-04
Release Date 2010-10-27
Last Version Date 2023-11-01
Entry Detail
PDB ID:
3ALN
Keywords:
TRANSFERASE
Title:
Crystal Structure of human non-phosphorylated MKK4 kinase domain complexed with AMP-PNP
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Host Organism:
Escherichia coli
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.30 Å
R-Value Free:
0.37
R-Value Work:
0.28
R-Value Observed:
0.28
Space Group:
P 21 21 21
3ALN validation report
Macromolecular Entities
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Dual specificity mitogen-activated protein kinase kinase 4
Gene (Uniprot):MAP2K4
Chain IDs:A, B, C
Chain Length:327
Number of Molecules:3
Biological Source:Homo sapiens
UniProt ID:P45985 Pfam ID:PF00069 EC:2.7.12.2
Ligand Molecules
ANP
MG
Primary Citation
Crystal structures of MKK4 kinase domain reveal that substrate peptide binds to an allosteric site and induces an auto-inhibition state
Biochem.Biophys.Res.Commun. 400 369 373 (2010)
PMID: 20732303 DOI: 10.1016/j.bbrc.2010.08.071

Abstact

MKK4 activates both JNKs and p38s. We determined the crystal structures of human non-phosphorylated MKK4 kinase domain (npMKK4) complexed with AMP-PNP (npMKK4/AMP) and a ternary complex of npMKK4, AMP-PNP and p38α peptide (npMKK4/AMP/p38). These crystal structures revealed that the p38α peptide-bound npMKK4 at the allosteric site rather than at the putative substrate binding site and induced an auto-inhibition state. While the activation loop of the npMKK4/AMP complex was disordered, in the npMKK4/AMP/p38 complex it configured a long α-helix, which prevented substrate access to the active site and αC-helix movement to the active configuration of MKK4.

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Primary Citation of related structures
3ALO