An extracellular alkaline α-D-mannosidase produced by a strain named as MA-01 was produced and its preliminary enzyme activity was characterized. Upon determining the 16S rDNA sequence and its homology search, the strain was identified to be one of species of the Bacillus safensis. Localization of enzyme was elucidated that α-D-mannosidase can be found in culture medium as an extracellular enzyme. In addition, partial enzyme activity of 63% compared with the extracellular enzyme activity was observed in membrane protein. The optimal pH and temperature of the α-D-mannosidase were pH 7.5 and 37℃, respectively. The Km and Vmax values of the α-D-mannosidase in crude enzyme toward p-nitrophenyl-α-D-mannopyranoside were determined to be 455.6 μM and 10.8 μ mole/min/mg of protein, respectively. To the best of our knowledge, this is the first report described the alkaline α-D-mannosidase from the family of B. safensis.
저자
Bo Mi Lee [ Department of Biomedical Science, Gachon University ]
Babita Kumari [ Department of Biomedical Science, Gachon University ]
Jae Kweon Park [ Department of Biomedical Science, Gachon University ]
본 학회는 화학, 생화학, 분자생물학, 미생물학, 식품공학, 의학, 약학, 유전공학 및 생물공학, 환경 및 기타 공업 등 전 분야의 탄수화물관련 이론과 기술을 연구 발전시키고 산학협동을 통해 이를 보급하여 국내 관련 산업의 발전 및 국민생활의 과학화에 기여하고자 하며, 이러한 목표와 비젼의 실현을 위해 회원들이 적극적인 참여와 활동을 전개하고자 한다.