Korean Journal of Microbiology (미생물학회지)

The Microbiological Society of Korea (한국미생물학회)
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Screening and Characteristics of a Mutant of Actinoplanes teichomyceticus ATCC31121 Highly Producing Teicoplanin

Teicoplanin 생산성이 우수한 Actinoplanes teichomyceticus ATCC31121 변이주 선별 및 배양학적 특성

  • 노용택 (영동대학교 생명공학부 유전공학전공)
  • Published : 2001.12.01
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Abstract

Teicoplanin is a kind of glycopeptide antibiotics produced by Actinoplanes teichomyceticus, and used in the clinical antibiotic such as vancomycin against methicillin-resistant Stabphylococcus aureus (MRSA). Actino planes teichomyceticus ATCC 31121 was mutated with UV to obtain a superior mutant strain with increased level of teicoplanin production. In this investigation, lethal curve was obtained and the optimal condition to induce mutagenesis was determined to isolate the desirable mutant strain. It was also confirmed that teicoplanin activities by agar diffusion method was compared with the parent strain. One mutant strain, T991014-1 with the highest productivity, was finally selected, and was characterized through the various tests such as amylase activity, protease activity, halotolerance, antibiotic resistance, autotoxicity, and productivity. Ad fermentation characteristics of the mutant strain were also studied.

Teicoplanin은 Actinoplanes teichomyceticus가 생산하는 밴코마이신과 유사한 글리코펩티드계 항생제의 일종으로 메티실린 내성 황색포도상구균에 대해서도 효과가 우수한 치료제이다. 공시균주인 Actinoplanes teichomyceticus ATCC31121에 자외선을 조사하여 teicoplanin 생산성이 우수한 균주를 얻었다. 본 연구에서 우수 변이주 획득을 위한 UV 조사에 대한 균주의 치사곡선을 구하고 변이 유도 최적 조건을 확립하였다. 또한 한천 확산법을 사용하여 모균주와 변이주들의 teicoplanin 생산성 분포를 비교하였다. 변이주 가운데 가장 생산성이 높은 T1014-1를 최종적으로 획득하였으며 효소 활성도, 항생제 내성, 자가내성 및 teicoplanin 생산성을 조사하였으며 발효조에서 발효특성을 조사하였다.

Keywords

References

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