4ijx

Crystal structure of human Ap4A hydrolase E58A mutant complexed with DPO

spinqualitylabelsall models 4ijx, resolution 2.10Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4ijx is a 2 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: DPO, GOL, MG, PO4 Related: 3u53, 4ick Gene: NUDT2, APAH1 (HUMAN) Activity: Bis(5'-nucleosyl)-tetraphosphatase (asymmetrical), with EC number 3.6.1.17 Resources: FirstGlance, OCA, RCSB, PDBsum Function [AP4A_HUMAN] Asymmetrically hydrolyzes Ap4A to yield AMP and ATP. Plays a major role in maintaining homeostasis. Publication Abstract from PubMed ApA hydrolase (asymmetrical diadenosine tetraphosphate hydrolase, EC 3.6.1.17), an enzyme involved in a number of biological processes, is characterized as cleaving the polyphosphate chain at the fourth phosphate from the bound adenosine moiety. This paper presents the crystal structure of wild-type and E58A mutant human ApA hydrolase. Similar to the canonical Nudix fold, human ApA hydrolase shows the common alphabetaalpha-sandwich architecture. Interestingly, two sulfate ions and one diphosphate coordinated with some conserved residues were observed in the active cleft, which affords a better understanding of a possible mode of substrate binding. Crystal structure of wild-type and mutant human Ap4A hydrolase.,Ge H, Chen X, Yang W, Niu L, Teng M Biochem Biophys Res Commun. 2013 Mar 1;432(1):16-21. doi:, 10.1016/j.bbrc.2013.01.095. Epub 2013 Feb 4. PMID:23384440 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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