The doxorubicin biosynthetic gene cluster in Streptomyces peucetius ATCC 27952 was found to contain a TDP-D-glucose 4,6-dehydratase gene, dnsM, putatively involved in the biosynthesis of 2,3,6-trideoxy-3-aminohexose, daunosamine. But the gene contains a frameshift in the DNA sequence that caused the premature termination of translation. In pursuit of another TDP-D-glucose dehydratase in S. peucetius, we discovered a homologue gene, rmbB, whose deduced product exhibit a high sequence similarity to a number of TDP-D-glucose 4,6-dehydratases. The gene was found to be located within a putative rhamnose biosynthetic gene cluster at another locus of the genome. The rmbB protein was verified to be functional by enzyme assay as it converted TDP-D-glucose into TDP-4-dehydro-6-deoxy-D-glucose. Inactivation of rmbB from S. peucetius genome abolished the production of doxorubicin. Consequently, rmbB was proved to be essential for the biosynthesis of doxorubicin.
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.