4JNB image
Deposition Date 2013-03-15
Release Date 2014-03-26
Last Version Date 2024-03-20
Entry Detail
PDB ID:
4JNB
Keywords:
Title:
Crystal structure of the Catalytic Domain of Human DUSP12
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Host Organism:
Method Details:
Experimental Method:
Resolution:
3.00 Å
R-Value Free:
0.25
R-Value Work:
0.24
Space Group:
H 3
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:Dual specificity protein phosphatase 12
Gene (Uniprot):DUSP12
Mutations:C97A, C115S
Chain IDs:A
Chain Length:167
Number of Molecules:1
Biological Source:Homo sapiens
Ligand Molecules
Primary Citation
The family-wide structure and function of human dual-specificity protein phosphatases.
Acta Crystallogr.,Sect.D 70 421 435 (2014)
PMID: 24531476 DOI: 10.1107/S1399004713029866

Abstact

Dual-specificity protein phosphatases (DUSPs), which dephosphorylate both phosphoserine/threonine and phosphotyrosine, play vital roles in immune activation, brain function and cell-growth signalling. A family-wide structural library of human DUSPs was constructed based on experimental structure determination supplemented with homology modelling. The catalytic domain of each individual DUSP has characteristic features in the active site and in surface-charge distribution, indicating substrate-interaction specificity. The active-site loop-to-strand switch occurs in a subtype-specific manner, indicating that the switch process is necessary for characteristic substrate interactions in the corresponding DUSPs. A comprehensive analysis of the activity-inhibition profile and active-site geometry of DUSPs revealed a novel role of the active-pocket structure in the substrate specificity of DUSPs. A structure-based analysis of redox responses indicated that the additional cysteine residues are important for the protection of enzyme activity. The family-wide structures of DUSPs form a basis for the understanding of phosphorylation-mediated signal transduction and the development of therapeutics.

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Primary Citation of related structures