1xas

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{{STRUCTURE_1xas| PDB=1xas | SCENE= }}
{{STRUCTURE_1xas| PDB=1xas | SCENE= }}
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'''CRYSTAL STRUCTURE, AT 2.6 ANGSTROMS RESOLUTION, OF THE STREPTOMYCES LIVIDANS XYLANASE A, A MEMBER OF THE F FAMILY OF BETA-1,4-D-GLYCANSES'''
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===CRYSTAL STRUCTURE, AT 2.6 ANGSTROMS RESOLUTION, OF THE STREPTOMYCES LIVIDANS XYLANASE A, A MEMBER OF THE F FAMILY OF BETA-1,4-D-GLYCANSES===
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==Overview==
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The crystal structure of the 32-kDa catalytic domain of the Streptomyces lividans xylanase A was solved by molecular isomorphous replacement methods and subsequently refined at 2.6-A resolution to a conventional crystallographic R factor of 0.21. This is the first successful structure determination of a member of the F family of endo-beta-1,4-D-glycanases. Unlike the recently determined xylanases of the G family (Wakarchuk, W. W., Campbell, R. L., Sung, W. L., Davoodi, J., and Yaguchi, M. (1994) Protein Sci. 3, 467-475), where the catalytic domains have a unique beta-sheet structure, the 32-kDa domain of the S. lividans xylanase A is folded into a complete (alpha/beta)8 barrel, the first such fold observed among beta-1,4-D-glycanases. The active site is located at the carbonyl end of the beta barrel. The crystal structure supports the earlier assignment of Glu-128 and Glu-236 as the catalytic amino acids (Moreau, A., Roberge, M., Manin, C., Shareck, F., Kluepfel, D., and Morosoli, R. (1994) Biochem. J., in press).
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{{ABSTRACT_PUBMED_8063693}}
==About this Structure==
==About this Structure==
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[[Category: Derewenda, Z S.]]
[[Category: Derewenda, Z S.]]
[[Category: Xylanase some]]
[[Category: Xylanase some]]
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Revision as of 23:19, 27 July 2008

Image:1xas.png

Template:STRUCTURE 1xas

CRYSTAL STRUCTURE, AT 2.6 ANGSTROMS RESOLUTION, OF THE STREPTOMYCES LIVIDANS XYLANASE A, A MEMBER OF THE F FAMILY OF BETA-1,4-D-GLYCANSES

Template:ABSTRACT PUBMED 8063693

About this Structure

1XAS is a Single protein structure of sequence from Streptomyces lividans. Full crystallographic information is available from OCA.

Reference

Crystal structure, at 2.6-A resolution, of the Streptomyces lividans xylanase A, a member of the F family of beta-1,4-D-glycanases., Derewenda U, Swenson L, Green R, Wei Y, Morosoli R, Shareck F, Kluepfel D, Derewenda ZS, J Biol Chem. 1994 Aug 19;269(33):20811-4. PMID:8063693

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