Biochemical properties of Bacillus intermedius subtilisin-like proteinase secreted by a Bacillus subtilis recombinant strain in its stationary phase of growth.
Biochemical properties of Bacillus intermedius subtilisin-like proteinase (AprBi) secreted by a B. subtilis recombinant strain in the early and late stationary phases of growth have been determined. Protein structure was analyzed and its stability estimated. It was noted that the enzyme corresponding to different phases of bacterial growth retains activity in the presence of reducing and oxidizing agents (C2H5OH and H2O2). Different effects of bivalent metal ions on activity of two proteinase fractions were found. Calcium ions more efficiently activate proteinase secreted in the late stationary phase. Unlike the first enzyme fraction, the second forms catalytically active dimers.
Kazan' State University, 420008 Kazan', Russia. katya_o_m@rambler.ru
E O
EO
Mikhailova
A M
AM
Mardanova
N P
NP
Balaban
G N
GN
Rudenskaya
O N
ON
Ilyinskaya
M R
MR
Sharipova
D000595:Amino Acid Sequence; D001407:Bacillus / Q000201:enzymology* / Q000235:genetics; D001412:Bacillus subtilis / Q000235:genetics; D001426:Bacterial Proteins / Q000235:genetics / Q000378:metabolism*; D002118:Calcium / Q000494:pharmacology; D002384:Catalysis / Q000187:drug effects; D003300:Copper / Q000494:pharmacology; D000431:Ethanol / Q000494:pharmacology; D006861:Hydrogen Peroxide / Q000494:pharmacology; D006863:Hydrogen-Ion Concentration; D008274:Magnesium / Q000494:pharmacology; D008345:Manganese / Q000494:pharmacology; D008969:Molecular Sequence Data; D011994:Recombinant Proteins / Q000302:isolation & purification / Q000378:metabolism*; D017386:Sequence Homology, Amino Acid; D020860:Subtilisin / Q000235:genetics / Q000378:metabolism*; D013696:Temperature
D001426:Bacterial Proteins; D011994:Recombinant Proteins; D000431:Ethanol; D008345:Manganese; D003300:Copper; D006861:Hydrogen Peroxide; D020860:Subtilisin; D008274:Magnesium; D002118:Calcium