1j83

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{{STRUCTURE_1j83| PDB=1j83 | SCENE= }}
{{STRUCTURE_1j83| PDB=1j83 | SCENE= }}
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'''STRUCTURE OF FAM17 CARBOHYDRATE BINDING MODULE FROM CLOSTRIDIUM CELLULOVORANS'''
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===STRUCTURE OF FAM17 CARBOHYDRATE BINDING MODULE FROM CLOSTRIDIUM CELLULOVORANS===
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==Overview==
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The crystal structure of the Clostridium cellulovorans carbohydrate-binding module (CBM) belonging to family 17 has been solved to 1.7 A resolution by multiple anomalous dispersion methods. CBM17 binds to non-crystalline cellulose and soluble beta-1,4-glucans, with a minimal binding requirement of cellotriose and optimal affinity for cellohexaose. The crystal structure of CBM17 complexed with cellotetraose solved at 2.0 A resolution revealed that binding occurs in a cleft on the surface of the molecule involving two tryptophan residues and several charged amino acids. Thermodynamic binding studies and alanine scanning mutagenesis in combination with the cellotetraose complex structure allowed the mapping of the CBM17 binding cleft. In contrast to the binding groove characteristic of family 4 CBMs, family 17 CBMs appear to have a very shallow binding cleft that may be more accessible to cellulose chains in non-crystalline cellulose than the deeper binding clefts of family 4 CBMs. The structural differences in these two modules may reflect non-overlapping binding niches on cellulose surfaces.
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{{ABSTRACT_PUBMED_11733998}}
==About this Structure==
==About this Structure==
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[[Category: Rose, D R.]]
[[Category: Rose, D R.]]
[[Category: Carbohydrate binding module]]
[[Category: Carbohydrate binding module]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 20:54:14 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 1 14:37:05 2008''

Revision as of 11:37, 1 July 2008

Image:1j83.png

Template:STRUCTURE 1j83

STRUCTURE OF FAM17 CARBOHYDRATE BINDING MODULE FROM CLOSTRIDIUM CELLULOVORANS

Template:ABSTRACT PUBMED 11733998

About this Structure

1J83 is a Single protein structure of sequence from Clostridium cellulovorans. Full crystallographic information is available from OCA.

Reference

Recognition of cello-oligosaccharides by a family 17 carbohydrate-binding module: an X-ray crystallographic, thermodynamic and mutagenic study., Notenboom V, Boraston AB, Chiu P, Freelove AC, Kilburn DG, Rose DR, J Mol Biol. 2001 Dec 7;314(4):797-806. PMID:11733998

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