5ven

Murine ectonucleotide pyrophosphatase / phosphodiesterase 5 (ENPP5, NPP5)

spinqualitylabelsall models 5ven, resolution 1.69Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5ven is a 2 chain structure with sequence from Mus musculus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.69Å Ligands: BMA, FUC, MAN, NAG, PG4, ZN Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function ENPP5_MOUSE May play a role in neuronal cell communication. Lacks nucleotide pyrophosphatase and lysopholipase D activity (By similarity).[UniProtKB:P84039] Publication Abstract from PubMed The ecto-nucleotide pyrophosphatase / phosphodiesterase (NPP) family of proteins mediates purinergic signaling by degrading extracellular nucleotides, and also participates in phospholipid metabolism. NPP5 (ENPP5) is the least characterized member of this group and its specific role is unknown. This enzyme does not display activity on certain nucleotides and on other typical NPP substrates. In order to gain insights into its function, we determined the crystal structure of human and murine NPP5. Structural comparison with close homologs revealed a key phenylalanine to tyrosine substitution that prevents efficient hydrolysis of nucleotide diphosphates and triphosphates; reversal of this mutation enabled degradation of these molecules. Interestingly, NPP5 is able to cleave nicotinamide adenine dinucleotide (NAD), suggesting a potential role of this enzyme in NAD-based neurotransmission. An NPP5-specific metal binding motif is found adjacent to the active site, although its significance is unclear. These findings expand our understanding of substrate specificity within the NPP family. This article is protected by copyright. All rights reserved. A Key Tyrosine Substitution Restricts Nucleotide Hydrolysis by the Ectoenzyme NPP5.,Gorelik A, Randriamihaja A, Illes K, Nagar B FEBS J. 2017 Sep 12. doi: 10.1111/febs.14266. PMID:28898552 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Ectonucleotide pyrophosphatase/phosphodiesterase 3D structures

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