View source for 4d70


==Structural, biophysical and biochemical analyses of a Clostridium perfringens Sortase D5 transpeptidase==
<StructureSection load='4d70' size='340' side='right'caption='[[4d70]], [[Resolution|resolution]] 1.99&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4d70]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Clostridium_perfringens Clostridium perfringens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4D70 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4D70 FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.99&#8491;</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=4d70 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4d70 OCA], [https://pdbe.org/4d70 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4d70 RCSB], [https://www.ebi.ac.uk/pdbsum/4d70 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4d70 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/Q8XNW0_CLOPE Q8XNW0_CLOPE] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The assembly and anchorage of various pathogenic proteins on the surface of Gram-positive bacteria is mediated by the sortase family of enzymes. These cysteine transpeptidases catalyze a unique sorting signal motif located at the C-terminus of their target substrate and promote the covalent attachment of these proteins onto an amino nucleophile located on another protein or on the bacterial cell wall. Each of the six distinct classes of sortases displays a unique biological role, with sequential activation of multiple sortases often observed in many Gram-positive bacteria to decorate their peptidoglycans. Less is known about the members of the class D family of sortases (SrtD), but they have a suggested role in spore formation in an oxygen-limiting environment. Here, the crystal structure of the SrtD enzyme from Clostridium perfringens was determined at 1.99 A resolution. Comparative analysis of the C. perfringens SrtD structure reveals the typical eight-stranded beta-barrel fold observed in all other known sortases, along with the conserved catalytic triad consisting of cysteine, histidine and arginine residues. Biochemical approaches further reveal the specifics of the SrtD catalytic activity in vitro, with a significant preference for the LPQTGS sorting motif. Additionally, the catalytic activity of SrtD is most efficient at 316 K and can be further improved in the presence of magnesium cations. Since C. perfringens spores are heat-resistant and lead to foodborne illnesses, characterization of the spore-promoting sortase SrtD may lead to the development of new antimicrobial agents.

Structural and biochemical analyses of a Clostridium perfringens sortase D transpeptidase.,Suryadinata R, Seabrook SA, Adams TE, Nuttall SD, Peat TS Acta Crystallogr D Biol Crystallogr. 2015 Jul 1;71(Pt 7):1505-13. doi:, 10.1107/S1399004715009219. Epub 2015 Jun 30. PMID:26143922<ref>PMID:26143922</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4d70" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Clostridium perfringens]]
[[Category: Large Structures]]
[[Category: Adams TE]]
[[Category: Nuttall SD]]
[[Category: Peat TS]]
[[Category: Seabrook S]]
[[Category: Suryadinata R]]