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Metabolic Engineering of E. coli for Regiospecific Modifications of Naringenin to produce Astragalin

첫 페이지 보기
  • 발행기관
    한국당과학회 바로가기
  • 간행물
    한국당과학회 학술대회 바로가기
  • 통권
    2013 한국당과학회 하계학술대회 (2013.08)바로가기
  • 페이지
    pp.64-65
  • 저자
    Ramesh Prasad Pandey, Sailesh Malla, Byung-Gee Kim, Kyung Sohng
  • 언어
    영어(ENG)
  • URL
    https://www.earticle.net/Article/A212755

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원문정보

초록

영어
We successfully produced astragalin (AST) from regiospecific modifications of naringenin (NRN) in Escherichia coli BL21(DE3). The exogenously supplied NRN was converted into dihydrokaempferol (DHK) and then kaempferol (KMF) in the presence of flavanone-3-hydroxylase (f3h) and flavonone synthase (fls1) from Arabidopsis thaliana, respectively. KMF was further modified to produce AST by 3-O-glucosylation utilizing the endogeneous UDP-glucose in presence of UGT78K1 from Glycine max. To increase the intracellular UDP-glucose concentration by channeling the carbon flux toward UDP-glucose at the branch point of glucose-6-phosphate (G6P), the chromosomal glucose phosphate isomerase (pgi) and D-glucose-6-phosphate dehydrogenase (zwf) were knocked-out in E. coli BL21(DE3). The two enzymes directly involved in the synthesis of UDP-glucose from G6P, phosphoglucomutase (nfa44530) from Nocardia farcinia and glucose-1-phosphate uridylyltransferase (galU) from E. coli K12 were overexpressed, which successfully diverted the carbon flow from glycolysis to the synthesis of UDP-glucose. Furthermore, to prevent the dissociation of UDP-glucose into UDP and glucose, the UDP-glucose hydrolase (ushA) was deleted. The E. coliΔpgiΔzwfΔushA mutant harboring the UDP-glucose biosynthetic pathway and the aforementioned genes for the regiospecific glucosylation produced 109.3 mg/L (244μM) of AST representing 48.8% conversion from 500 μM of NRN in 60 h without any supplementation of extracellular UDP-glucose.

저자

  • Ramesh Prasad Pandey [ Institute of Biomolecule Reconstruction (iBR), Department of Pharmaceutical Engineering, Sun Moon University, #100, Kalsan-ri, Tangjeon-myeon, Asan-si, Chungnam 336-708, South Korea ]
  • Sailesh Malla [ 2Laboratory of Molecular Biotechnology and Biomaterials, School of Chemical and Biological Engineering, Seoul National University, Seoul, South Korea, Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Hørsholm, Denmark ]
  • Byung-Gee Kim [ Laboratory of Molecular Biotechnology and Biomaterials, School of Chemical and Biological Engineering, Seoul National University, Seoul, South Korea ]
  • Kyung Sohng [ Institute of Biomolecule Reconstruction (iBR), Department of Pharmaceutical Engineering, Sun Moon University, #100, Kalsan-ri, Tangjeon-myeon, Asan-si, Chungnam 336-708, South Korea ]

참고문헌

자료제공 : 네이버학술정보

간행물 정보

발행기관

  • 발행기관명
    한국당과학회 [Korean Society for Glycoscience]
  • 설립연도
    2006
  • 분야
    의약학>약학
  • 소개
    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.

간행물

  • 간행물명
    한국당과학회 학술대회
  • 간기
    연간
  • 수록기간
    2006~2022
  • 십진분류
    KDC 517 DDC 614

이 권호 내 다른 논문 / 한국당과학회 학술대회 2013 한국당과학회 하계학술대회

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