title: Serratia liquefaciens as a new host superior for overproduction and purification using the N-acetylneuraminate lyase gene of Escherichia coli.
abstract: 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 temperature than E. coli and its proteins were more heat sensitive than those of E. coli, simple incubation at 60 degrees C could inactivate most enzymes but the nanA protein. Subsequent column works for purification, then, became simple and rapid.
authors.affiliation: Tsuruga Institute of Biotechnology, Toyobo Co., Ltd., Fukui, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Yamamoto
authors.forename: B
authors.initials: B
authors.lastname: Kawakami
authors.forename: Y
authors.initials: Y
authors.lastname: Kawamura
authors.forename: K
authors.initials: K
authors.lastname: Kawai
mesh_terms: D001426:Bacterial Proteins / Q000235:genetics* / Q000302:isolation & purification / Q000378:metabolism; D004926:Escherichia coli / Q000201:enzymology* / Q000235:genetics; D015870:Gene Expression; D005822:Genetic Vectors; D006361:Heating; D006863:Hydrogen-Ion Concentration; D007652:Oxo-Acid-Lyases / Q000235:genetics* / Q000302:isolation & purification / Q000378:metabolism; D010957:Plasmids; D011993:Recombinant Fusion Proteins / Q000235:genetics / Q000302:isolation & purification / Q000378:metabolism; D012705:Serratia / Q000378:metabolism*; D013696:Temperature
chemical_list: D001426:Bacterial Proteins; D011993:Recombinant Fusion Proteins; D007652:Oxo-Acid-Lyases; C018728:N-acetylneuraminate lyase