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| | <StructureSection load='4el8' size='340' side='right'caption='[[4el8]], [[Resolution|resolution]] 2.45Å' scene=''> | | <StructureSection load='4el8' size='340' side='right'caption='[[4el8]], [[Resolution|resolution]] 2.45Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4el8]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Anaerocellum_thermophilum Anaerocellum thermophilum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4EL8 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4EL8 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4el8]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Caldicellulosiruptor_bescii_DSM_6725 Caldicellulosiruptor bescii DSM 6725]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4EL8 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4EL8 FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> | + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">Athe_1867 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=521460 Anaerocellum thermophilum])</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=4el8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4el8 OCA], [https://pdbe.org/4el8 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4el8 RCSB], [https://www.ebi.ac.uk/pdbsum/4el8 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4el8 ProSAT]</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=4el8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4el8 OCA], [http://pdbe.org/4el8 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4el8 RCSB], [http://www.ebi.ac.uk/pdbsum/4el8 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4el8 ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | + | == Function == |
| | + | [[https://www.uniprot.org/uniprot/B9MKU7_CALBD B9MKU7_CALBD]] |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Anaerocellum thermophilum]] | + | [[Category: Caldicellulosiruptor bescii DSM 6725]] |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Alahuhta, P M]] | + | [[Category: Alahuhta PM]] |
| - | [[Category: Lunin, V V]] | + | [[Category: Lunin VV]] |
| - | [[Category: Cela]]
| + | |
| - | [[Category: Gh48]]
| + | |
| - | [[Category: Glycoside hydrolase]]
| + | |
| - | [[Category: Hydrolase]]
| + | |
| Structural highlights
Function
[B9MKU7_CALBD]
Publication Abstract from PubMed
Most fungi and bacteria degrade plant cell walls by secreting free, complementary enzymes that hydrolyze cellulose; however, some bacteria use large enzymatic assemblies called cellulosomes, which recruit complementary enzymes to protein scaffolds. The thermophilic bacterium Caldicellulosiruptor bescii uses an intermediate strategy, secreting many free cellulases that contain multiple catalytic domains. One of these, CelA, comprises a glycoside hydrolase family 9 and a family 48 catalytic domain, as well as three type III cellulose-binding modules. In the saccharification of a common cellulose standard, Avicel, CelA outperforms mixtures of commercially relevant exo- and endoglucanases. From transmission electron microscopy studies of cellulose after incubation with CelA, we report morphological features that suggest that CelA not only exploits the common surface ablation mechanism driven by general cellulase processivity, but also excavates extensive cavities into the surface of the substrate. These results suggest that nature's repertoire of cellulose digestion paradigms remain only partially discovered and understood.
Revealing nature's cellulase diversity: the digestion mechanism of Caldicellulosiruptor bescii CelA.,Brunecky R, Alahuhta M, Xu Q, Donohoe BS, Crowley MF, Kataeva IA, Yang SJ, Resch MG, Adams MW, Lunin VV, Himmel ME, Bomble YJ Science. 2013 Dec 20;342(6165):1513-6. doi: 10.1126/science.1244273. PMID:24357319[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Brunecky R, Alahuhta M, Xu Q, Donohoe BS, Crowley MF, Kataeva IA, Yang SJ, Resch MG, Adams MW, Lunin VV, Himmel ME, Bomble YJ. Revealing nature's cellulase diversity: the digestion mechanism of Caldicellulosiruptor bescii CelA. Science. 2013 Dec 20;342(6165):1513-6. doi: 10.1126/science.1244273. PMID:24357319 doi:http://dx.doi.org/10.1126/science.1244273
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