2b59

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[[Image:2b59.gif|left|200px]]
 
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{{Structure
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==The type II cohesin dockerin complex==
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|PDB= 2b59 |SIZE=350|CAPTION= <scene name='initialview01'>2b59</scene>, resolution 2.11&Aring;
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<StructureSection load='2b59' size='340' side='right'caption='[[2b59]], [[Resolution|resolution]] 2.11&Aring;' scene=''>
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|SITE=
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== Structural highlights ==
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|LIGAND= <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>
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<table><tr><td colspan='2'>[[2b59]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Acetivibrio_thermocellus Acetivibrio thermocellus] and [https://en.wikipedia.org/wiki/Acetivibrio_thermocellus_ATCC_27405 Acetivibrio thermocellus ATCC 27405]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2B59 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2B59 FirstGlance]. <br>
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|ACTIVITY=
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.11&#8491;</td></tr>
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|GENE= SdbA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=203119 Clostridium thermocellum ATCC 27405]), cipA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1515 Clostridium thermocellum])
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene></td></tr>
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|DOMAIN=
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2b59 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2b59 OCA], [https://pdbe.org/2b59 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2b59 RCSB], [https://www.ebi.ac.uk/pdbsum/2b59 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2b59 ProSAT], [https://www.topsan.org/Proteins/BSGI/2b59 TOPSAN]</span></td></tr>
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|RELATEDENTRY=
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</table>
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2b59 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2b59 OCA], [http://www.ebi.ac.uk/pdbsum/2b59 PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2b59 RCSB]</span>
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== Function ==
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}}
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[https://www.uniprot.org/uniprot/A3DF10_ACET2 A3DF10_ACET2]
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/b5/2b59_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</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=2b59 ConSurf].
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<div style="clear:both"></div>
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'''The type II cohesin dockerin complex'''
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==See Also==
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*[[Cellulosome scaffolding protein 3D structures|Cellulosome scaffolding protein 3D structures]]
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__TOC__
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==Overview==
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</StructureSection>
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Bacterial cell-surface attachment of macromolecular complexes maintains the microorganism in close proximity to extracellular substrates and allows for optimal uptake of hydrolytic byproducts. The cellulosome is a large multienzyme complex used by many anaerobic bacteria for the efficient degradation of plant cell-wall polysaccharides. The mechanism of cellulosome retention to the bacterial cell surface involves a calcium-mediated protein-protein interaction between the dockerin (Doc) module from the cellulosomal scaffold and a cohesin (Coh) module of cell-surface proteins located within the proteoglycan layer. Here, we report the structure of an ultra-high-affinity (K(a) = 1.44 x 10(10) M(-1)) complex between type II Doc, together with its neighboring X module from the cellulosome scaffold of Clostridium thermocellum, and a type II Coh module associated with the bacterial cell surface. Identification of X module-Doc and X module-Coh contacts reveal roles for the X module in Doc stability and enhanced Coh recognition. This extremely tight interaction involves one face of the Coh and both helices of the Doc and comprises significant hydrophobic character and a complementary extensive hydrogen-bond network. This structure represents a unique mechanism for cell-surface attachment in anaerobic bacteria and provides a rationale for discriminating between type I and type II Coh modules.
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[[Category: Acetivibrio thermocellus]]
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[[Category: Acetivibrio thermocellus ATCC 27405]]
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==About this Structure==
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[[Category: Large Structures]]
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2B59 is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Clostridium_thermocellum Clostridium thermocellum] and [http://en.wikipedia.org/wiki/Clostridium_thermocellum_atcc_27405 Clostridium thermocellum atcc 27405]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2B59 OCA].
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[[Category: Adams JJ]]
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[[Category: Smith SP]]
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==Reference==
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Mechanism of bacterial cell-surface attachment revealed by the structure of cellulosomal type II cohesin-dockerin complex., Adams JJ, Pal G, Jia Z, Smith SP, Proc Natl Acad Sci U S A. 2006 Jan 10;103(2):305-10. Epub 2005 Dec 29. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16384918 16384918]
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[[Category: Clostridium thermocellum]]
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[[Category: Clostridium thermocellum atcc 27405]]
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[[Category: Protein complex]]
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[[Category: Adams, J J.]]
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[[Category: BSGI, Montreal-Kingston Bacterial Structural Genomics Initiative.]]
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[[Category: Smith, S P.]]
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[[Category: bsgi]]
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[[Category: cellulosome]]
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[[Category: ef hand]]
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[[Category: montreal-kingston bacterial structural genomics initiative]]
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[[Category: protein-protein complex]]
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[[Category: structural genomic]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 02:01:43 2008''
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Current revision

The type II cohesin dockerin complex

PDB ID 2b59

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