4b56: Difference between revisions

<table><tr><td colspan='2'>[[4b56]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Lk3_transgenic_mice Lk3 transgenic mice]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4B56 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4B56 FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=MAN:ALPHA-D-MANNOSE'>MAN</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></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=4b56 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4b56 OCA], [http://pdbe.org/4b56 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4b56 RCSB], [http://www.ebi.ac.uk/pdbsum/4b56 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4b56 ProSAT]</span></td></tr>

[[http://www.uniprot.org/uniprot/ENPP1_MOUSE ENPP1_MOUSE]] Defects in Enpp1 are the cause of the tiptoe walking (ttw) phenotype. Ttw mice exhibit ossification of the spinal ligaments.<ref>PMID:9662402</ref>   

[[http://www.uniprot.org/uniprot/ENPP1_MOUSE ENPP1_MOUSE]] Appears to modulate insulin sensitivity (By similarity). By generating PPi, plays a role in regulating pyrophosphate levels, and functions in bone mineralization and soft tissue calcification. PPi inhibits mineralization by binding to nascent hydroxyapatite (HA) crystals, thereby preventing further growth of these crystals. Preferentially hydrolyzes ATP, but can also hydrolyze other nucleoside 5' triphosphates such as GTP, CTP, TTP and UTP to their corresponding monophosphates with release of pyrophosphate and diadenosine polyphosphates, and also 3',5'-cAMP to AMP. May also be involved in the regulation of the availability of nucleotide sugars in the endoplasmic reticulum and Golgi, and the regulation of purinergic signaling.<ref>PMID:1647027</ref> <ref>PMID:9662402</ref>   

*[[Ectonucleotide pyrophosphatase/phosphodiesterase|Ectonucleotide pyrophosphatase/phosphodiesterase]]