Overproduction and purification of glutaryl 7-amino cephalosporanic acid acylase.


Journal Article

The gene encoding glutaryl 7-amino cephalosporanic acid acylase (GL-7ACA acylase) from Pseudomonas sp. 130 has been cloned and expressed in Escherichia coli using a high-level expression system. The specific activity of the acylase in the crude extract of cells in this system is approximately 10 times that in the previous one. The overproduced enzyme can be easily isolated within 3 days to a purity of over 90% by a simple and inexpensive two-step preparative chromatographic method with an overall yield of nearly 50%. The deletion of the signal peptide and mutation in the alpha-subunit of the acylase have little influence on its posttranslational processing and its kinetic parameters.

Full Text

Duke Authors

Cited Authors

  • Li, Y; Jiang, W; Yang, Y; Zhao, G; Wang, E

Published Date

  • March 1, 1998

Published In

Volume / Issue

  • 12 / 2

Start / End Page

  • 233 - 238

PubMed ID

  • 9518465

Pubmed Central ID

  • 9518465

International Standard Serial Number (ISSN)

  • 1046-5928

Digital Object Identifier (DOI)

  • 10.1006/prep.1997.0823


  • eng

Conference Location

  • United States