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[[Image:1kfg.gif|left|200px]]


{{Structure
==The X-ray Crystal Structure of Cel9G from Clostridium cellulolyticum complexed with a Thio-Oligosaccharide Inhibitor==
|PDB= 1kfg |SIZE=350|CAPTION= <scene name='initialview01'>1kfg</scene>, resolution 1.90&Aring;
<StructureSection load='1kfg' size='340' side='right'caption='[[1kfg]], [[Resolution|resolution]] 1.90&Aring;' scene=''>
|SITE=  
== Structural highlights ==
|LIGAND= <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=GLC:GLUCOSE'>GLC</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=GS1:1-THIO-BETA-D-GLUCOPYRANOSE'>GS1</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=NI:NICKEL+(II)+ION'>NI</scene>, <scene name='pdbligand=SGC:4-DEOXY-4-THIO-BETA-D-GLUCOPYRANOSE'>SGC</scene>, <scene name='pdbligand=TRS:2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL'>TRS</scene>
<table><tr><td colspan='2'>[[1kfg]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Ruminiclostridium_cellulolyticum Ruminiclostridium cellulolyticum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KFG OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1KFG FirstGlance]. <br>
|ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/Cellulase Cellulase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.1.4 3.2.1.4] </span>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.9&#8491;</td></tr>
|GENE= CELCCG ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1521 Clostridium cellulolyticum])
<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=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=GS1:1-THIO-BETA-D-GLUCOPYRANOSE'>GS1</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=NI:NICKEL+(II)+ION'>NI</scene>, <scene name='pdbligand=SGC:4-DEOXY-4-THIO-BETA-D-GLUCOPYRANOSE'>SGC</scene>, <scene name='pdbligand=TRS:2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL'>TRS</scene></td></tr>
|DOMAIN=
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1kfg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1kfg OCA], [https://pdbe.org/1kfg PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1kfg RCSB], [https://www.ebi.ac.uk/pdbsum/1kfg PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1kfg ProSAT]</span></td></tr>
|RELATEDENTRY=[[1g87|1G87]], [[1ga7|1GA7]], [[1k72|1K72]]
</table>
|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1kfg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1kfg OCA], [http://www.ebi.ac.uk/pdbsum/1kfg PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1kfg RCSB]</span>
== Function ==
}}
[https://www.uniprot.org/uniprot/GUNG_RUMCH GUNG_RUMCH] The biological conversion of cellulose to glucose generally requires three types of hydrolytic enzymes: (1) Endoglucanases which cut internal beta-1,4-glucosidic bonds; (2) Exocellobiohydrolases that cut the disaccharide cellobiose from the non-reducing end of the cellulose polymer chain; (3) Beta-1,4-glucosidases which hydrolyze the cellobiose and other short cello-oligosaccharides to glucose.
 
== Evolutionary Conservation ==
'''The X-ray Crystal Structure of Cel9G from Clostridium cellulolyticum complexed with a Thio-Oligosaccharide Inhibitor'''
[[Image:Consurf_key_small.gif|200px|right]]
 
Check<jmol>
 
  <jmolCheckbox>
==Overview==
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/kf/1kfg_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1kfg ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Complete cellulose degradation is the first step in the use of biomass as a source of renewable energy. To this end, the engineering of novel cellulase activity, the activity responsible for the hydrolysis of the beta-1,4-glycosidic bonds in cellulose, is a topic of great interest. The high-resolution X-ray crystal structure of a multidomain endoglucanase from Clostridium cellulolyticum has been determined at a 1.6-A resolution. The endoglucanase, Cel9G, is comprised of a family 9 catalytic domain attached to a family III(c) cellulose-binding domain. The two domains together form a flat platform onto which crystalline cellulose is suggested to bind and be fed into the active-site cleft for endolytic hydrolysis. To further dissect the structural basis of cellulose binding and hydrolysis, the structures of Cel9G in the presence of cellobiose, cellotriose, and a DP-10 thio-oligosaccharide inhibitor were resolved at resolutions of 1.7, 1.8, and 1.9 A, respectively.
Complete cellulose degradation is the first step in the use of biomass as a source of renewable energy. To this end, the engineering of novel cellulase activity, the activity responsible for the hydrolysis of the beta-1,4-glycosidic bonds in cellulose, is a topic of great interest. The high-resolution X-ray crystal structure of a multidomain endoglucanase from Clostridium cellulolyticum has been determined at a 1.6-A resolution. The endoglucanase, Cel9G, is comprised of a family 9 catalytic domain attached to a family III(c) cellulose-binding domain. The two domains together form a flat platform onto which crystalline cellulose is suggested to bind and be fed into the active-site cleft for endolytic hydrolysis. To further dissect the structural basis of cellulose binding and hydrolysis, the structures of Cel9G in the presence of cellobiose, cellotriose, and a DP-10 thio-oligosaccharide inhibitor were resolved at resolutions of 1.7, 1.8, and 1.9 A, respectively.


==About this Structure==
X-Ray crystal structure of the multidomain endoglucanase Cel9G from Clostridium cellulolyticum complexed with natural and synthetic cello-oligosaccharides.,Mandelman D, Belaich A, Belaich JP, Aghajari N, Driguez H, Haser R J Bacteriol. 2003 Jul;185(14):4127-35. PMID:12837787<ref>PMID:12837787</ref>
1KFG is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Clostridium_cellulolyticum Clostridium cellulolyticum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KFG OCA].


==Reference==
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
X-Ray crystal structure of the multidomain endoglucanase Cel9G from Clostridium cellulolyticum complexed with natural and synthetic cello-oligosaccharides., Mandelman D, Belaich A, Belaich JP, Aghajari N, Driguez H, Haser R, J Bacteriol. 2003 Jul;185(14):4127-35. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/12837787 12837787]
</div>
[[Category: Cellulase]]
<div class="pdbe-citations 1kfg" style="background-color:#fffaf0;"></div>
[[Category: Clostridium cellulolyticum]]
[[Category: Single protein]]
[[Category: Belaich, A.]]
[[Category: Belaich, J P.]]
[[Category: Driguez, H.]]
[[Category: Haser, R.]]
[[Category: Mandelman, D.]]
[[Category: (alpha-alpha)6-barrel]]
[[Category: cellulose binding domain]]
[[Category: endoglucanase]]
[[Category: family 9]]
[[Category: thio-oligosaccharide]]
[[Category: x-ray diffraction]]


''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 21:47:50 2008''
==See Also==
*[[Glucanase 3D structures|Glucanase 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Ruminiclostridium cellulolyticum]]
[[Category: Belaich A]]
[[Category: Belaich J-P]]
[[Category: Driguez H]]
[[Category: Haser R]]
[[Category: Mandelman D]]
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