View source for 4xwm


==Complex structure of catalytic domain of Clostridium Cellulovorans Exgs and Cellobiose==
<StructureSection load='4xwm' size='340' side='right'caption='[[4xwm]], [[Resolution|resolution]] 1.70&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4xwm]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Clostridium_cellulovorans Clostridium cellulovorans]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=4kkf 4kkf]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4XWM OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4XWM 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]] 1.703&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BGC:BETA-D-GLUCOSE'>BGC</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=GLC:ALPHA-D-GLUCOSE'>GLC</scene>, <scene name='pdbligand=PRD_900005:beta-cellobiose'>PRD_900005</scene>, <scene name='pdbligand=PRD_900023:alpha-cellobiose'>PRD_900023</scene></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=4xwm FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4xwm OCA], [https://pdbe.org/4xwm PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4xwm RCSB], [https://www.ebi.ac.uk/pdbsum/4xwm PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4xwm ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/O65986_CLOCL O65986_CLOCL] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Exoglucanase/cellobiohydrolase (EC 3.2.1.176) hydrolyzes a beta-1,4-glycosidic bond from the reducing end of cellulose and releases cellobiose as the major product. Three complex crystal structures of the glycosyl hydrolase 48 (GH48) cellobiohydrolase S (ExgS) from Clostridium cellulovorans with cellobiose, cellotetraose and triethylene glycol molecules were solved. The product cellobiose occupies subsites +1 and +2 in the open active-site cleft of the enzyme-cellotetraose complex structure, indicating an enzymatic hydrolysis function. Moreover, three triethylene glycol molecules and one pentaethylene glycol molecule are located at active-site subsites -2 to -6 in the structure of the ExgS-triethylene glycol complex shown here. Modelling of glucose into subsite -1 in the active site of the ExgS-cellobiose structure revealed that Glu50 acts as a proton donor and Asp222 plays a nucleophilic role.

Structures of exoglucanase from Clostridium cellulovorans: cellotetraose binding and cleavage.,Tsai LC, Amiraslanov I, Chen HR, Chen YW, Lee HL, Liang PH, Liaw YC Acta Crystallogr F Struct Biol Commun. 2015 Oct 1;71(Pt 10):1264-72. doi:, 10.1107/S2053230X15015915. Epub 2015 Sep 23. PMID:26457517<ref>PMID:26457517</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4xwm" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Clostridium cellulovorans]]
[[Category: Large Structures]]
[[Category: Liaw Y-C]]