Medium and copy number effects on the secretion of human proinsulin in Escherichia coli using the universal stress promoters uspA and uspB

• Type: Article in International Scientific Journal
• Date: 2003

Authors

Mergulhao, FJM (Author) Other; Monteiro, GA (Author) Other; Larsson, G (Author) Other; Sanden, AM (Author) Other; Farewell, A (Author) Other; Nystrom, T (Author) Other; Cabral, JMS (Author) Other; Taipa, MA (Author) Other

Journal

Title: Applied Microbiology and Biotechnology

Vol. 61

Pages: 495-501

ISSN: 0175-7598

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 16 Citations

ISI Web of Science

Scopus - 18 Citations

Scientific classification

FOS: Natural sciences > Biological sciences

CORDIS: Technological sciences > Technology > Biotecnology

Other information

Authenticus ID: P-000-GB0

DOI: 10.1007/s00253-003-1232-8

Abstract (EN): The use of the uspA and uspB promoters (universal stress promoters) for heterologous protein production in Escherichia coli is described. Best results were obtained with a moderate copy number vector (1560 copies) bearing the uspA promoter, reaching 4.6 mg/g dry cell weight (DCW) of ZZ-proinsulin secreted to the periplasm and 1.9 mg/g DCW secreted to the culture medium. These values are about 1.7-fold higher than those previously reported with the same ZZ fusion tag and the SpA leader peptide showing that these stress promoters are potentially valuable for recombinant protein secretion in E. coli. It is further demonstrated that the use of M9 minimal medium is advantageous for protein secretion as compared to LB rich medium.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7