منابع مشابه
Cloning, High-level Expression and Characterization of a β-Galactosidase from Bacillus subtilis G1
A gene (lacA) coding for β-galactosidase from Bacillus subtilis strain G1 was cloned, expressed in E. coli and the β-galactosidase LacA was purified and characterized. The lacA gene consisted of an open reading frame of 2061 nucleotides, encoding a 686-aa protein, with a predicted molecular mass of 79 kDa and pI 6.16. The β-galactosidase showed an identity of 97.8% with the corresponding amino ...
متن کاملβ-galactosidase in larynx cancer
es, such as α-mannosidases (MAN) and β-galactosidases (GAL), are found in different glycoside hydrolase sequencebased families. Considerable research has proved plays the role of MAN, which play a key role in the modification and diversification of hybrid N-glycans, processes with strong cellular links to cancer. Therefore the study aim was to investigate the activities of MAN and GAL in larynx...
متن کاملRatiometric electrochemical detection of β-galactosidase.
A novel ferrocene-based substrate for the ratiometric electrochemical detection of β-galactosidase was designed and synthesised. It was demonstrated to be an excellent electrochemical substrate for β-Gal detection with sensitivity as low as 0.1 U mL-1.
متن کاملβ-galactosidase stability at high substrate concentrations
Enzymatic synthesis of galacto-oligosaccharides is usually performed at high initial substrate concentrations since higher yields are obtained. We report here on the stability of β-galactosidase from Bacillus circulans at 25, 40, and 60°C in buffer, and in systems with initially 5.0 and 30% (w/w) lactose. In buffer, the half-life time was 220 h and 13 h at 25 and 40°C, respectively, whereas the...
متن کاملIs senescence-associated β-galactosidase a marker of neuronal senescence?
One of the features of cellular senescence is the activity of senescence-associated- β-galactosidase (SA-β-gal). The main purpose of this study was to evaluate this marker of senescence in aging neurons. We found that cortical neurons exhibited noticeable SA-β-gal activity quite early in culture. Many SA-β-gal-positive neurons were negative for another canonical marker of senescence, namely, do...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1974
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(19)42060-7