Lv. Znamenskaya et al., OPTIMIZATION OF BACILLUS-INTERMEDIUS CULTIVATION CONDITIONS FOR OBTAINING RIBONUCLEASE LABELED BY STABLE ISOTOPES, Microbiology, 62(4), 1993, pp. 420-422
Two versions of medium composition for obtaining of binase labelled by
C-13 or N-15 were selected through a multifactor experiment. A medium
containing 0.8% glucose and 2.5% hydrolysate of Anabaena sp. as carbo
n and nitrogen sources, respectively, is recommended for production of
N-15-labelled enzyme and medium containing hydrolysate as the sole ca
rbon and nitrogen source is recommended for production of C-13-labelle
d enzyme. Addition of 0.125 mu g/ml of actinomycin D to the medium inc
reases the enzyme yield.