Generally glycosylated natural compounds have the specific contribution to the pharmacological properties. Particularly, C-glycosylflavones are involved in UV protection, defense against pathogens and inhibition of caterpillar growth. C-glycosylflavones are biosynthesized from flavone via C-glycosylation of 2-hydroxyflavone or flavone. Two plant C-glucosyltransferases (CGTs) UGT708D1 from Glycine max and GtUF6CGT1 from Gentian triflora were used for glucosylation of chrysin. UDP-glucose pool was enhanced by introducing heterologous UDP-glucose biosynthestic genes i.e., glucokinase (glk), phosphoglucomutase (pgm2), and glucose 1-phosphate uridylyltransferase (galU), along with glucose facilitator diffusion protein (glf), in a multi-monocistronic vector pIBR. Moreover, the bioengineered E. coli strains enhanced the production by approximately 1.4–fold, thus producing 10 mg/L and 14 mg/L by UGT708D1 and GtUF6CGT1, respectively, without supplementation of additional UDP-glucose in the medium. HPLC analysis of fermentation broth extract showed 50 % (42 mg/L) conversion. Thus in this study, we successfully biosynthesized C-glycosylflavone in vivo and the product was confirmed by LC-MS and NMR.
저자
Anil Shrestha [ Department of Life Science and Biochemical Engineering ]
Dipesh Dhakal [ Department of Life Science and Biochemical Engineering, Department of BT-Convergent Pharmaceutical Engineering SunMoon University, 70 Sunmoon-ro 221, Tangjeong-myeon, Asan-si, Chungnam 31460, Kore ]
Ramesh Prasad Pandey [ Department of Life Science and Biochemical Engineering, Department of BT-Convergent Pharmaceutical Engineering SunMoon University, 70 Sunmoon-ro 221, Tangjeong-myeon, Asan-si, Chungnam 31460, Kore ]
Jae Kyung Sohng [ Department of Life Science and Biochemical Engineering, Department of BT-Convergent Pharmaceutical Engineering SunMoon University, 70 Sunmoon-ro 221, Tangjeong-myeon, Asan-si, Chungnam 31460, Kore ]
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.