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2b59
From Proteopedia
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| - | [[Image:2b59.gif|left|200px]] | + | [[Image:2b59.gif|left|200px]] |
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| - | '''The type II cohesin dockerin complex''' | + | {{Structure |
| + | |PDB= 2b59 |SIZE=350|CAPTION= <scene name='initialview01'>2b59</scene>, resolution 2.11Å | ||
| + | |SITE= | ||
| + | |LIGAND= <scene name='pdbligand=CA:CALCIUM ION'>CA</scene> | ||
| + | |ACTIVITY= | ||
| + | |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]) | ||
| + | }} | ||
| + | |||
| + | '''The type II cohesin dockerin complex''' | ||
| + | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
| - | 2B59 is a [ | + | 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]. |
==Reference== | ==Reference== | ||
| - | 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:// | + | 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] |
[[Category: Clostridium thermocellum]] | [[Category: Clostridium thermocellum]] | ||
[[Category: Clostridium thermocellum atcc 27405]] | [[Category: Clostridium thermocellum atcc 27405]] | ||
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[[Category: montreal-kingston bacterial structural genomics initiative]] | [[Category: montreal-kingston bacterial structural genomics initiative]] | ||
[[Category: protein-protein complex]] | [[Category: protein-protein complex]] | ||
| - | [[Category: structural | + | [[Category: structural genomic]] |
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 15:57:45 2008'' |
Revision as of 13:57, 20 March 2008
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| , resolution 2.11Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | |||||||
| Gene: | SdbA (Clostridium thermocellum ATCC 27405), cipA (Clostridium thermocellum) | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
The type II cohesin dockerin complex
Overview
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.
About this Structure
2B59 is a Protein complex structure of sequences from Clostridium thermocellum and Clostridium thermocellum atcc 27405. Full crystallographic information is available from OCA.
Reference
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:16384918
Page seeded by OCA on Thu Mar 20 15:57:45 2008
Categories: Clostridium thermocellum | Clostridium thermocellum atcc 27405 | Protein complex | Adams, J J. | BSGI, Montreal-Kingston Bacterial Structural Genomics Initiative. | Smith, S P. | CA | Bsgi | Cellulosome | Ef hand | Montreal-kingston bacterial structural genomics initiative | Protein-protein complex | Structural genomic
