2fek

Structure of a protein tyrosine phosphatase

spinqualitylabelsall models 2fek, 20 NMR models Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2fek is a 1 chain structure with sequence from Ecoli. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. Gene: wzb (ECOLI) Activity: Protein-tyrosine-phosphatase, with EC number 3.1.3.48 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [WZB_ECOLI] Dephosphorylates wzc. Required for the extracellular polysaccharide colanic acid synthesis. Probably involved in the export of colanic acid from the cell to medium. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed Low molecular weight protein-tyrosine phosphatases (LMW-PTPs) are small enzymes that ubiquitously exist in various organisms and play important roles in many biological processes. In Escherichia coli, the LMW-PTP Wzb dephosphorylates the autokinase Wzc, and the Wzc/Wzb pair regulates colanic acid production. However, the substrate recognition mechanism of Wzb is still poorly understood thus far. To elucidate the molecular basis of the catalytic mechanism, we have determined the solution structure of Wzb at high resolution by NMR spectroscopy. The Wzb structure highly resembles that of the typical LMW-PTP fold, suggesting that Wzb may adopt a similar catalytic mechanism with other LMW-PTPs. Nevertheless, in comparison with eukaryotic LMW-PTPs, the absence of an aromatic amino acid at the bottom of the active site significantly alters the molecular surface and implicates Wzb may adopt a novel substrate recognition mechanism. Furthermore, a structure-based multiple sequence alignment suggests that a class of the prokaryotic LMW-PTPs may share a similar substrate recognition mechanism with Wzb. The current studies provide the structural basis for rational drug design against the pathogenic bacteria. The solution structure of Escherichia coli Wzb reveals a novel substrate recognition mechanism of prokaryotic low molecular weight protein-tyrosine phosphatases.,Lescop E, Hu Y, Xu H, Hu W, Chen J, Xia B, Jin C J Biol Chem. 2006 Jul 14;281(28):19570-7. Epub 2006 May 1. PMID:16651264 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Tyrosine phosphatase 3D structures

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