A new HPLC-based assay for the direct determination of the extent of maleylation of proteins is described. The rationale is founded on the HPLC detection of maleic acid that results from cleavage of maleyl lysyls by low pH treatment. The method, employing a C-18 reverse-phase column eluted isocratic
A General High-Performance Liquid Chromatography-Based Assay for the Hydrolysis of N-Acyl Glutamates
β Scribed by Rebecca S. Myers; Patrick T. Paton; Azar Dastgah; Jose R. Martell; Clifford E. Berkman
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 66 KB
- Volume
- 275
- Category
- Article
- ISSN
- 0003-2697
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β¦ Synopsis
A rapid and simple HPLC assay has been developed to separate and quantify N-acyl glutamates and the corresponding carboxylic acids of the acyl moiety. This method was specifically developed to assay hydrolytic activity for glutamate carboxypeptidases. Although established assays for specific substrates of such enzymes exist, they may not be amenable for examining the hydrolytic activity of new substrate probes. This assay was developed to accommodate such probes.
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