2fuk: Difference between revisions

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[[Image:2fuk.gif|left|200px]]
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{{STRUCTURE_2fuk|  PDB=2fuk  |  SCENE=  }}  
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'''Crystal structure of XC6422 from Xanthomonas campestris: a member of a/b serine hydrolase without lid at 1.6 resolution'''
===Crystal structure of XC6422 from Xanthomonas campestris: a member of a/b serine hydrolase without lid at 1.6 resolution===




==Overview==
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XC6422 is a conserved hypothetical protein from Xanthomonas campestris pathovar campestris (Xcc), a Gram-negative yellow-pigmented pathogenic bacterium that causes black rot, one of the major worldwide diseases of cruciferous crops. The protein consists of 220 amino acids and its structure has been determined to 1.6 A resolution using the multi-wavelength anomalous dispersion (MAD) method. Although it has very low sequence identity to protein sequences in the PDB (less than 20%), the determined structure nevertheless shows that it belongs to the superfamily of serine alpha/beta-hydrolases, with an active site that is fully accessible to solvent owing to the absence of a lid domain. Modelling studies with the serine esterase inhibitor E600 indicate that XC6422 adopts a conserved Ser-His-Asp catalytic triad common to this superfamily and has a preformed oxyanion hole for catalytic activation. These structural features suggest that XC6422 is most likely to be a hydrolase active on a soluble ester or a small lipid. An extra strand preceding the first beta-strand in the canonical alpha/beta-hydrolase fold leads to extensive subunit interactions between XC6422 monomers, which may explain why XC6422 crystals of good diffraction quality can grow to dimensions of up to 1.5 mm in a few days.
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==About this Structure==
==About this Structure==
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[[Category: X-ray diffraction]]
[[Category: X-ray diffraction]]
[[Category: Xanthomonas campestri]]
[[Category: Xanthomonas campestri]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May  4 04:19:29 2008''
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Jul 27 22:44:33 2008''

Revision as of 19:44, 27 July 2008

File:2fuk.png

Template:STRUCTURE 2fuk

Crystal structure of XC6422 from Xanthomonas campestris: a member of a/b serine hydrolase without lid at 1.6 resolution

Template:ABSTRACT PUBMED 16754966

About this Structure

Full crystallographic information is available from OCA.

Reference

Structure of XC6422 from Xanthomonas campestris at 1.6 A resolution: a small serine alpha/beta-hydrolase., Yang CY, Chin KH, Chou CC, Wang AH, Chou SH, Acta Crystallogr Sect F Struct Biol Cryst Commun. 2006 Jun 1;62(Pt, 6):498-503. Epub 2006 May 31. PMID:16754966

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