Isolation, purification, and characterization of L-glutamate oxidase from Streptomyces sp. 18G
Full Text
Reprint PDF

Keywords

L-glutamate
L-glutamate oxidase
purification
screening
Streptomyces

How to Cite

1.
Wachiratianchai S, Bhumiratana A, Udomsopagit S. Isolation, purification, and characterization of L-glutamate oxidase from Streptomyces sp. 18G. Electron. J. Biotechnol. [Internet]. 2004 Dec. 15 [cited 2024 Sep. 19];7(3):0-. Available from: https://preprints.pucv.cl/index.php/ejbiotechnology/article/view/v7n3-14

Abstract

An extracellular L-glutamate oxidase (GLOD) was purified from soil-isolated Streptomyces sp 18G. The enzyme had a molecular weight of approximately 120,000 and consisted of two identical subunits, each with a molecular weight of 61,000. The isoelectric point was pH 8.5 and the enzyme had an optimal pH between 7.0-7.4. GLOD showed the maximum activity at 37ºC. The GLOD activity was stable at pH ranging from 6.5 to 7.0 for 1 hr. Among 21 amino acids tested for substrate specificity, L-glutamate was almost exclusively oxidized. D-glutamate and L-aspartate were oxidized but only to extents of 0.79% and 0.53%, respectively.

Full Text
Reprint PDF

Upon acceptance of an article by the journal, authors will be asked to transfer the copyright to Electronic Journal of Biotechnology, which is committed to maintain the electronic access to the journal and to administer a policy of fair control and ensure the widest possible dissemination of the information. The author can use the article for academic purposes, stating clearly the following: "Published in Electronic Journal of Biotechnology at DOI:10.2225/volXX-issueX-fulltext-XX".

The Copyright Transfer Agreement must be submitted as a signed scanned copy to biotec@ucv.cl. All authors must send a copy of this document.