Research and Development>> Assay Development

smitra@bu.edu

 

 

 

 

 

 

 

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Sangha Mitra

Biotechnology Professional and Consultant

MBA candidate, December 2012

Health Sector Management

Boston University School of Management

 

 

I developed a direct and convenient spectrophotometric assay for methionine aminopeptidases. The method employs the hydrolysis of a substrate that is a methionyl analogue of p-nitroaniline , which releases the chromogenic product p-nitroaniline. This chromogenic product can be monitored continuously using a UV–Vis spectrophotometer set at 405 nm.

 

The assay was compared with a “standard” high-performance liquid chromatography (HPLC) discontinuous assay and was used to determine the temperature dependence of the kinetic constant as well as to screen two novel pseudopeptide inhibitors of MetAPs.

 

 

 

Related Publications:

 

1.      Mitra, S., Dygas-Holz, A. M., Jiracek J., Zertova M., Zakova, L. and Holz, R.C. “A New Colorimetric Assay for Methionyl Aminopeptidases: Examination of the Binding of a New Class of Pseudopeptide Analog Inhibitors.”Analytical Biochemistry, 2006 Oct 1; 357(1):43-9. [Read abstract here]

 

 

 

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