K. Yamamoto et al., SERRATIA LIQUEFACIENS AS A NEW HOST SUPERIOR FOR OVERPRODUCTION AND PURIFICATION USING THE N-ACETYLNEURAMINATE LYASE GENE OF ESCHERICHIA-COLI, Analytical biochemistry, 246(2), 1997, pp. 171-175
Serratia liquefaciens was screened as a host strain for effective gene
expression and easy purification of the target protein. A model gene,
N-acetylneuraminate lyase gene (nanA), fused with the promoter region
of Escherichia coli lac operon successfully overproduced the protein
independently from the inducer. Since S. liquefaciens grew at lower te
mperature than E. coli and its proteins were more heat sensitive than
those of E. coli, simple incubation at 60 degrees C could inactivate m
ost enzymes but the nanA protein. Subsequent column works for purifica
tion, then, became simple and rapid. (C) 1997 Academic Press.