The influences of lactose as an inducer on expression of plant des-pGlu1-brazzein in Escherichia coli / 生物工程学报
Chinese Journal of Biotechnology
;
(12): 1021-1025, 2006.
Article
in Chinese
| WPRIM
| ID: wpr-325432
ABSTRACT
Expression strain of des-pGlu1-brazzein was constructed and the conditions using lactose as inducer was also optimized. The Influences of three factors which were lactose concentration, induction time and inducing temperature on the growth of strain and on the yield of des-pGlul-Brazzein was analyzed in detail. The result indicated that high lactose concentration inhibit the growth of strains (P < 0.01) but made no difference on expression of target protein between 0.5%-5% (P > 0.05), Biomass would be improved as time passed (P < 0.01), but the yield of target protein didn't increase obviously at 30 degrees C compared with at 37 degrees C. Further result showed that the greater expressed level of des-pGlul-Brazzein, as high as about 20% of total cell protein, could be achieved after the strain had been induced with 0.5% lactose under 28 degrees C - 30 degrees C for 4 h.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Pharmacology
/
Plant Proteins
/
Plasmids
/
Temperature
/
Time Factors
/
Up-Regulation
/
Dose-Response Relationship, Drug
/
Escherichia coli
/
Genetics
/
Isopropyl Thiogalactoside
Language:
Chinese
Journal:
Chinese Journal of Biotechnology
Year:
2006
Type:
Article
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