1kt9

<StructureSection load='1kt9' size='340' side='right' caption='[[1kt9]], [[Resolution|resolution]] 1.98&Aring;' scene=''>

<table><tr><td colspan='2'>[[1kt9]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Caeel Caeel]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KT9 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1KT9 FirstGlance]. <br>

</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">Y37H9A.6 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=6239 CAEEL])</td></tr>

<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Bis(5'-nucleosyl)-tetraphosphatase_(asymmetrical) Bis(5'-nucleosyl)-tetraphosphatase (asymmetrical)], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.6.1.17 3.6.1.17] </span></td></tr>

<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1kt9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1kt9 OCA], [http://pdbe.org/1kt9 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1kt9 RCSB], [http://www.ebi.ac.uk/pdbsum/1kt9 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1kt9 ProSAT]</span></td></tr>

[[http://www.uniprot.org/uniprot/AP4A_CAEEL AP4A_CAEEL]] Asymmetrically hydrolyzes Ap4A to yield AMP and ATP.<ref>PMID:11738085</ref>

<div style="background-color:#fffaf0;">

== Publication Abstract from PubMed ==

The crystal structure of C. elegans Ap(4)A hydrolase has been determined for the free enzyme and a binary complex at 2.0 A and 1.8 A, respectively. Ap(4)A hydrolase has a key role in regulating the intracellular Ap(4)A levels and hence potentially the cellular response to metabolic stress and/or differentiation and apoptosis via the Ap(3)A/Ap(4)A ratio. The structures reveal that the enzyme has the mixed alpha/beta fold of the Nudix family and also show how the enzyme binds and locates its substrate with respect to the catalytic machinery of the Nudix motif. These results suggest how the enzyme can catalyze the hydrolysis of a range of related dinucleoside tetraphosphate, but not triphosphate, compounds through precise orientation of key elements of the substrate.

The crystal structure of diadenosine tetraphosphate hydrolase from Caenorhabditis elegans in free and binary complex forms.,Bailey S, Sedelnikova SE, Blackburn GM, Abdelghany HM, Baker PJ, McLennan AG, Rafferty JB Structure. 2002 Apr;10(4):589-600. PMID:11937063<ref>PMID:11937063</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

</div>

<div class="pdbe-citations 1kt9" style="background-color:#fffaf0;"></div>

[[Category: Caeel]]

[[Category: Abdelghany, H M]]

[[Category: Bailey, S]]

[[Category: Baker, P J]]

[[Category: Blackburn, G M]]

[[Category: McLennan, A G]]

[[Category: Rafferty, J B]]

[[Category: Sedelnikova, S E]]

[[Category: Nudix]]