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1.
Prikl Biokhim Mikrobiol ; 32(6): 646-9, 1996.
Article in Russian | MEDLINE | ID: mdl-9011863

ABSTRACT

The promoting effect of electromagnetic field (EMF) on biosynthesis and activity of extracellular proteinase and lectin in B. subtilis 316 M was observed. It caused 1.5- and 4-fold increase of the metabolites yield respectively. The EMF stimulated a 2-fold activation of lectin, rise of the enzyme activity and a shift of it pI from 11.4-11.5 to 9.2-9.3.


Subject(s)
Bacillus subtilis/radiation effects , Electromagnetic Fields , Lectins/radiation effects , Serine Endopeptidases/radiation effects , Bacillus subtilis/metabolism , Enzyme Stability , Isoelectric Focusing , Lectins/isolation & purification , Serine Endopeptidases/isolation & purification
3.
Prikl Biokhim Mikrobiol ; 29(3): 389-97, 1993.
Article in Russian | MEDLINE | ID: mdl-8516279

ABSTRACT

A simple procedure is proposed for purification of lectin from the culture liquid of non-pathogenic Bacillus subtilis 316M, which includes fractionation with ammonium sulfate and rechromatography on Sepharose CL-6B. The procedure enables a 213-fold purification of lectin with a specific activity of 2560 U/mg protein and 51% recovery in activity. According to gel-filtration through Sepharose the lectin has a molecular weight of 190 kDa. It consists of two types of subunits with hemagglutinating activity. The lectin is highly specific to N-glycolylneuraminic and N-acetylneuraminic acids and fructose 1.6-biphosphate.


Subject(s)
Bacillus subtilis/metabolism , Lectins/isolation & purification , Sialoglycoproteins/immunology , Amino Acids/analysis , Chromatography, Affinity , Chromatography, Gel , Chromatography, High Pressure Liquid , Electrophoresis, Polyacrylamide Gel , Hemagglutination Tests , Lectins/analysis , Molecular Weight
4.
Mikrobiol Zh (1978) ; 51(3): 3-6, 1989.
Article in Russian | MEDLINE | ID: mdl-2796784

ABSTRACT

The medium has been optimized in order to increase the lectin-producing activity of Bacillus mesentericus. When a producer grew on the optimized medium, a 4-8-fold increase of the hemagglutination test titres and a 5.6-fold increase (as compared with the initial medium) of the specific lectin activity of the culture liquid was attained.


Subject(s)
Bacillus/metabolism , Lectins/biosynthesis , Culture Media
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