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1byh

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[[Image:1byh.gif|left|200px]]
[[Image:1byh.gif|left|200px]]
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{{Structure
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<!--
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|PDB= 1byh |SIZE=350|CAPTION= <scene name='initialview01'>1byh</scene>, resolution 2.8&Aring;
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The line below this paragraph, containing "STRUCTURE_1byh", creates the "Structure Box" on the page.
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|SITE=
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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|LIGAND= <scene name='pdbligand=BGC:BETA-D-GLUCOSE'>BGC</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=GLC:GLUCOSE'>GLC</scene>, <scene name='pdbligand=NBU:N-BUTANE'>NBU</scene>
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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|ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/Licheninase Licheninase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.1.73 3.2.1.73] </span>
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or leave the SCENE parameter empty for the default display.
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|GENE=
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-->
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|DOMAIN=
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{{STRUCTURE_1byh| PDB=1byh | SCENE= }}
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|RELATEDENTRY=
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1byh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1byh OCA], [http://www.ebi.ac.uk/pdbsum/1byh PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1byh RCSB]</span>
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}}
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'''MOLECULAR AND ACTIVE-SITE STRUCTURE OF A BACILLUS (1-3,1-4)-BETA-GLUCANASE'''
'''MOLECULAR AND ACTIVE-SITE STRUCTURE OF A BACILLUS (1-3,1-4)-BETA-GLUCANASE'''
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[[Category: Heinemann, U.]]
[[Category: Heinemann, U.]]
[[Category: Keitel, T.]]
[[Category: Keitel, T.]]
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[[Category: hydrolase]]
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[[Category: Hydrolase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 12:07:04 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 19:10:54 2008''
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Revision as of 09:07, 2 May 2008

Image:1byh.gif

Template:STRUCTURE 1byh

MOLECULAR AND ACTIVE-SITE STRUCTURE OF A BACILLUS (1-3,1-4)-BETA-GLUCANASE


Overview

The three-dimensional structure of the hybrid Bacillus 1,3-1,4-beta-glucanase (beta-glucanase; 1,3-1,4-beta-D-glucan 4-glucanohydrolase, lichenase, EC 3.2.1.73) designated H(A16-M) was determined by x-ray crystallography at a resolution of 2.0 A and refined to an R value of 16.4% using stereochemical restraints. The protein molecule consists mainly of two seven-stranded antiparallel beta-pleated sheets arranged atop each other to form a compact, sandwich-like structure. A channel crossing one side of the protein molecule accommodates an inhibitor, 3,4-epoxybutyl beta-D-cellobioside, which binds covalently to the side chain of Glu-105, as seen in a crystal structure analysis at 2.8-A resolution of the protein-inhibitor complex (R = 16.8%). That Glu-105 may be indispensible for enzyme catalysis by H(A16-M) is suggested by site-directed mutagenesis of this residue, which inevitably leads to an inactive enzyme.

About this Structure

1BYH is a Single protein structure of sequence from Synthetic construct. Full crystallographic information is available from OCA.

Reference

Molecular and active-site structure of a Bacillus 1,3-1,4-beta-glucanase., Keitel T, Simon O, Borriss R, Heinemann U, Proc Natl Acad Sci U S A. 1993 Jun 1;90(11):5287-91. PMID:8099449 Page seeded by OCA on Fri May 2 12:07:04 2008

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