Anti--Glucosidase Activity by a Protease from Bacillus licheniformis

被引:18
作者
Chien Thang Doan [1 ,2 ]
Thi Ngoc Tran [1 ,2 ]
Minh Trung Nguyen [2 ]
Van Bon Nguyen [2 ]
Anh Dzung Nguyen [3 ]
Wang, San-Lang [1 ,4 ]
机构
[1] Tamkang Univ, Dept Chem, New Taipei 25137, Taiwan
[2] Tay Nguyen Univ, Dept Sci & Technol, Buon Ma Thuot 630000, Vietnam
[3] Tay Nguyen Univ, Inst Biotechnol & Environm, Buon Ma Thuot 630000, Vietnam
[4] Tamkang Univ, Life Sci Dev Ctr, New Taipei 25137, Taiwan
关键词
anti--glucosidase; protease; diabetes; microbial conversion; Bacillus licheniformis; ALPHA-GLUCOSIDASE; SHRIMP HEADS; PURIFICATION; INHIBITORS; SUBTILISIN; 1-DEOXYNOJIRIMYCIN; OLIGOSACCHARIDES; IDENTIFICATION; AMYLASE; ENZYMES;
D O I
10.3390/molecules24040691
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Anti--glucosidase (AAG) compounds have received great attention due to their potential use in treating diabetes. In this study, Bacillus licheniformis TKU004, an isolated bacterial strain from Taiwanese soil, produced AAG activity in the culture supernatant when squid pens were used as the sole carbon/nitrogen (C/N) source. The protein TKU004P, which was isolated from B. licheniformis TKU004, showed stronger AAG activity than acarbose, a commercial anti-diabetic drug (IC50 = 0.1 mg/mL and 2.02 mg/mL, respectively). The molecular weight of TKU004P, determined by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), was 29 kDa. High-performance liquid chromatography (HPLC) analysis showed that TKU004P may be a protease that demonstrates AAG activity by degrading yeast -glucosidase. Among the four chitinous sources of C/N, TKU004P produced the highest AAG activity in the culture supernatant when shrimp head powder was used as the sole source (470.66 U/mL). For comparison, 16 proteases, were investigated for AAG activity but TKU004P produced the highest levels. Overall, the findings suggest that TKU004P could have applications in the biochemical and medicinal fields thanks to its ability to control the activity of -glucosidase.
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页数:13
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