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1ed7

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[[Image:1ed7.gif|left|200px]]
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{{STRUCTURE_1ed7| PDB=1ed7 | SCENE= }}
{{STRUCTURE_1ed7| PDB=1ed7 | SCENE= }}
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'''SOLUTION STRUCTURE OF THE CHITIN-BINDING DOMAIN OF BACILLUS CIRCULANS WL-12 CHITINASE A1'''
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===SOLUTION STRUCTURE OF THE CHITIN-BINDING DOMAIN OF BACILLUS CIRCULANS WL-12 CHITINASE A1===
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==Overview==
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The three-dimensional structure of the chitin-binding domain (ChBD) of chitinase A1 (ChiA1) from a Gram-positive bacterium, Bacillus circulans WL-12, was determined by means of multidimensional heteronuclear NMR methods. ChiA1 is a glycosidase that hydrolyzes chitin and is composed of an N-terminal catalytic domain, two fibronectin type III-like domains, and C-terminal ChBD(ChiA1) (45 residues, Ala(655)-Gln(699)), which binds specifically to insoluble chitin. ChBD(ChiA1) has a compact and globular structure with the topology of a twisted beta-sandwich. This domain contains two antiparallel beta-sheets, one composed of three strands and the other of two strands. The core region formed by the hydrophobic and aromatic residues makes the overall structure rigid and compact. The overall topology of ChBD(ChiA1) is similar to that of the cellulose-binding domain (CBD) of Erwinia chrysanthemi endoglucanase Z (CBD(EGZ)). However, ChBD(ChiA1) lacks the three aromatic residues aligned linearly and exposed to the solvent, which probably interact with cellulose in CBDs. Therefore, the binding mechanism of a group of ChBDs including ChBD(ChiA1) may be different from that proposed for CBDs.
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(as it appears on PubMed at http://www.pubmed.gov), where 10788483 is the PubMed ID number.
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{{ABSTRACT_PUBMED_10788483}}
==About this Structure==
==About this Structure==
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1ED7 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Bacillus_circulans Bacillus circulans]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ED7 OCA].
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1ED7 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Bacillus_circulans Bacillus circulans]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ED7 OCA].
==Reference==
==Reference==
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[[Category: Watanabe, T.]]
[[Category: Watanabe, T.]]
[[Category: Twisted beta-sandwich]]
[[Category: Twisted beta-sandwich]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 14:57:27 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 1 00:31:14 2008''

Revision as of 21:31, 30 June 2008

Image:1ed7.png

Template:STRUCTURE 1ed7

SOLUTION STRUCTURE OF THE CHITIN-BINDING DOMAIN OF BACILLUS CIRCULANS WL-12 CHITINASE A1

Template:ABSTRACT PUBMED 10788483

About this Structure

1ED7 is a Single protein structure of sequence from Bacillus circulans. Full experimental information is available from OCA.

Reference

Solution structure of the chitin-binding domain of Bacillus circulans WL-12 chitinase A1., Ikegami T, Okada T, Hashimoto M, Seino S, Watanabe T, Shirakawa M, J Biol Chem. 2000 May 5;275(18):13654-61. PMID:10788483

Page seeded by OCA on Tue Jul 1 00:31:14 2008

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