1y7m

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{{STRUCTURE_1y7m| PDB=1y7m | SCENE= }}
{{STRUCTURE_1y7m| PDB=1y7m | SCENE= }}
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'''Crystal Structure of the B. subtilis YkuD protein at 2 A resolution'''
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===Crystal Structure of the B. subtilis YkuD protein at 2 A resolution===
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==Overview==
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The crystal structure of the product of the Bacillus subtilis ykuD gene was solved by the multiwavelength anomalous dispersion (MAD) method and refined using data to 2.0 A resolution. The ykuD protein is a representative of a distinctly prokaryotic and ubiquitous family found among both pathogenic and nonpathogenic Gram-positive and Gram-negative bacteria. The deduced amino acid sequence reveals the presence of an N-terminal LysM domain, which occurs among enzymes involved in cell wall metabolism, and a novel, putative catalytic domain with a highly conserved His/Cys-containing motif of hitherto unknown structure. As the wild-type protein did not crystallize, a double mutant was designed (Lys117Ala/Gln118Ala) to reduce excess surface conformational entropy. As expected, the structure of the LysM domain is similar to the NMR structure reported for an analogous domain from Escherichia coli murein transglycosylase MltD. The molecular model also shows that the 112-residue-long C-terminal domain has a novel tertiary fold consisting of a beta-sandwich with two mixed sheets, one containing five strands and the other, six strands. The two beta-sheets form a cradle capped by an alpha-helix. This domain contains a putative catalytic site with a tetrad of invariant His123, Gly124, Cys139, and Arg141. The stereochemistry of this active site shows similarities to peptidotransferases and sortases, and suggests that the enzymes of the ykuD family may play an important role in cell wall biology.
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(as it appears on PubMed at http://www.pubmed.gov), where 16287140 is the PubMed ID number.
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{{ABSTRACT_PUBMED_16287140}}
==About this Structure==
==About this Structure==
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[[Category: Structural genomic]]
[[Category: Structural genomic]]
[[Category: Surface mutagenesis]]
[[Category: Surface mutagenesis]]
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Revision as of 17:54, 28 July 2008

Image:1y7m.png

Template:STRUCTURE 1y7m

Crystal Structure of the B. subtilis YkuD protein at 2 A resolution

Template:ABSTRACT PUBMED 16287140

About this Structure

1Y7M is a Single protein structure of sequence from Bacillus subtilis subsp. subtilis str. 168. Full crystallographic information is available from OCA.

Reference

B. subtilis ykuD protein at 2.0 A resolution: insights into the structure and function of a novel, ubiquitous family of bacterial enzymes., Bielnicki J, Devedjiev Y, Derewenda U, Dauter Z, Joachimiak A, Derewenda ZS, Proteins. 2006 Jan 1;62(1):144-51. PMID:16287140

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