View source for 3sr9


==Crystal structure of mouse PTPsigma==
<StructureSection load='3sr9' size='340' side='right' caption='[[3sr9]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3sr9]] is a 1 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=3SR9 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3SR9 FirstGlance]. <br>
</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">Ptprs ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10090 LK3 transgenic mice])</td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Protein-tyrosine-phosphatase Protein-tyrosine-phosphatase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.3.48 3.1.3.48] </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=3sr9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3sr9 OCA], [http://pdbe.org/3sr9 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3sr9 RCSB], [http://www.ebi.ac.uk/pdbsum/3sr9 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3sr9 ProSAT]</span></td></tr>
</table>
== Function ==
[[http://www.uniprot.org/uniprot/PTPRS_MOUSE PTPRS_MOUSE]] Interacts with LAR-interacting protein LIP.1 (By similarity). 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Protein tyrosine phosphatases PTP-sigma (PTPsigma) plays an important role in the development of the nervous system and nerve regeneration. Although cumulative studies about the function of PTPsigma have been reported, yet limited data have been reported about the crystal structure and in vitro activity of mouse PTPsigma. Here we report the crystal structure of mouse PTPsigma tandem phosphatase domains at 2.4 A resolution. Then we compared the crystal structure of mouse PTPsigma with human PTPsigma and found that they are very similar, superimposing with a root mean square deviation of 0.45 A for 517 equivalent Calpha atoms. But some residues in mouse PTPsigma form loops while corresponding residues in human PTPsigma form beta-sheets or alpha-helices. Furthermore, we also compared in vitro activities of mouse PTPsigma with human PTPsigma and found that mouse PTPsigma has 25-fold higher specific activity than human PTPsigma does toward O-methyl fluorescein phosphate (OMFP) as the substrate. However, there is no significant activity difference between the mouse and the human enzyme detected with p-nitrophenylphosphate (pNPP) as the substrate. Mouse PTPsigma and human PTPsigma have different substrate specificities toward OMFP and pNPP as substrates. This work gives clues for further study of PTPsigma.

Structural insights into the homology and differences between mouse protein tyrosine phosphatase-sigma and human protein tyrosine phosphatase-sigma.,Hou L, Wang J, Zhou Y, Li J, Zang Y, Li J Acta Biochim Biophys Sin (Shanghai). 2011 Dec;43(12):977-88. Epub 2011 Oct 25. PMID:22027896<ref>PMID:22027896</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 3sr9" style="background-color:#fffaf0;"></div>

==See Also==
*[[Tyrosine phosphatase|Tyrosine phosphatase]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Lk3 transgenic mice]]
[[Category: Protein-tyrosine-phosphatase]]
[[Category: Ding, J]]
[[Category: Hou, L]]
[[Category: Li, J]]
[[Category: Wang, J]]
[[Category: Hydrolase]]
[[Category: Tyrosine phosphatase]]