THE EFFECT OF R-PLASMID ON L-ASPARAGINASE ACTIVITY OF ESCHERICHIA COLI
- VernacularTitle:R质粒对大肠杆菌L-天门冬酰胺酶活力的影响
- Author:
Yanmin HU
;
Chunxiang WANG
;
Xiuge ZHANG
;
- Publication Type:Journal Article
- Keywords:
R-plasmid;
Escherichia coli;
L-asparaginase
- From:
Microbiology
1992;0(05):-
- CountryChina
- Language:Chinese
-
Abstract:
L-asparaginase activity produced by six E. coli J53 strains containing different plasmids and plasmid free E. coli J53 strain was compared. The enzyme activity of the plasmid- bearing strains was about 2—4 times lower than that of the plasmid free ones. Curing the R plasmids from E. coli J53, the activity of L-asparaginase increased and was close to that of the plasmid free strain. It is proved that the remarkable inhibition of L-asparaginase activity results from the presence of the plasmid in E. coli.
