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Site-Directed Mutagenesis and Preliminary X-Ray Crystallographic Studies of the Tabtoxin Resistance Protein

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Tabtoxin resistance protein (TTR) is an enzyme that catalyzes the acetylation of tabtoxin rendering tabtoxin-producing pathogens tolerant to their own phytotoxins. According to the structure based detoxification mechanism of TTR, three site-directed mutants Y141F, D130N and Y141F-D130N were constructed and overexpressed in E. coli. The products were then purified and their properties were analyzed by CD and DLS. Crystallization trials of two mutants Y141F andY141F-D130N were preformed.

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Keywords: circular dichroism spectra; crystallization; dynamic light scattering; mutation; tabtoxin resistance protein

Document Type: Review Article

Publication date: 2003-06-01

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  • Protein & Peptide Letters publishes short papers in all important aspects of protein and peptide research, including structural studies, recombinant expression, function, synthesis, enzymology, immunology, molecular modeling, drug design etc. Manuscripts must have a significant element of novelty, timeliness and urgency that merit rapid publication. Reports of crystallisation, and preliminary structure determinations of biologically important proteins are acceptable. Purely theoretical papers are also acceptable provided they provide new insight into the principles of protein/peptide structure and function.
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