3qtp

Crystal Structure Analysis of Entamoeba histolytica Enolase

spinqualitylabelsall models 3qtp, resolution 1.90Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 3qtp is a 2 chain structure with sequence from Entamoeba histolytica. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.9Å Ligands: 2PG, MG, SO4 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function ENO_ENTH1 Glycolytic enzyme that catalyzes the conversion of 2-phosphoglycerate to phosphoenolpyruvate (PubMed:15794763). Inhibits tRNA methyltransferase METH catalytic activity in the absence of 2-phosphoglycerate (PubMed:20174608). Publication Abstract from PubMed Entamoeba histolytica enolase (EhENO) reversibly interconverts 2-phosphoglyceric acid (2-PGA) and phosphoenolpyruvic acid (PEP). The crystal structure of the homodimeric EhENO is presented at a resolution of 1.9 A. In the crystal structure EhENO presents as an asymmetric dimer with one active site in the open conformation and the other active site in the closed conformation. Interestingly, both active sites contain a copurified 2-PGA molecule. While the 2-PGA molecule in the closed active site closely resembles the conformation known from other enolase-2-PGA complexes, the conformation in the open active site is different. Here, 2-PGA is shifted approximately 1.6 A away from metal ion I, most likely representing a precatalytic situation. Structure analysis of Entamoeba histolytica enolase.,Schulz EC, Tietzel M, Tovy A, Ankri S, Ficner R Acta Crystallogr D Biol Crystallogr. 2011 Jul;67(Pt 7):619-27. Epub 2011, Jun 14. PMID:21697600 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Enolase 3D structures

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