alexa Development of an efficient enzymatic production of gamma-D-glutamyl-L-tryptophan (SCV-07), a prospective medicine for tuberculosis, with bacterial gamma-glutamyltranspeptidase.
Bioinformatics & Systems Biology

Bioinformatics & Systems Biology

Journal of Computer Science and Networking

Author(s): Suzuki H, Kato K, Kumagai H

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Abstract Gamma-D-Glutamyl-L-tryptophan (SCV-07) is a prospective medicine for the treatment of tuberculosis, according to the phase two clinical trial. Because gamma-D-glutamyl-L-tryptophan has several reactive groups in its molecule, consists of D- and L-amino acids, and is connected by gamma-glutamyl linkage, its chemical synthesis is complicated. An efficient enzymatic method to synthesize gamma-D-glutamyl-L-tryptophan from D-glutamine and L-tryptophan employing bacterial gamma-glutamyltranspeptidase was developed. The optimum reaction conditions were 50 mM D-glutamine, 50 mM L-tryptophan, and 0.2 U ml(-1) gamma-glutamyltranspeptidase, pH 9-9.5, and incubation at 37 degrees C for 5 h. After a 5 h incubation, 33 mM gamma-D-glutamyl-L-tryptophan was obtained, the conversion rate being 66\%. The product was purified by Dowex 1 x 8 column and was considered to be gamma-D-glutamyl-L-tryptophan. This article was published in J Biotechnol and referenced in Journal of Computer Science and Networking

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