KR101246853B1 - 슈도모나스에 의한 폴리만누레이트 및 이의 유도체의 제조방법 - Google Patents
슈도모나스에 의한 폴리만누레이트 및 이의 유도체의 제조방법 Download PDFInfo
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- KR101246853B1 KR101246853B1 KR1020100093170A KR20100093170A KR101246853B1 KR 101246853 B1 KR101246853 B1 KR 101246853B1 KR 1020100093170 A KR1020100093170 A KR 1020100093170A KR 20100093170 A KR20100093170 A KR 20100093170A KR 101246853 B1 KR101246853 B1 KR 101246853B1
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- gene
- acpm
- polymannuronate
- pseudomonas
- strain
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Abstract
본 발명의 슈도모나스 속 균주 및 이의 돌연변이체는 다량의 폴리만누로네이트, 아세틸화된 폴리만누로네이트 또는 알긴산을 생산할 수 있으며, 이렇게 제조된 폴리만누로네이트 또는 아세틸화된 폴리만누로네이트는 광범위한 pH 및 온도와, 높은 전해질 농도에서 현저한 유동학적 성질을 보여, 약학 및 의학 분야에서 활용도가 높다.
Description
도 1b는 본 발명의 재조합 플라스미드 pPROBE-GT-algP를 나타낸 것이다.
도 1c는 본 발명의 재조합 플라스미드 p34S-Tc2를 나타낸 것이다.
도 1d는 본 발명의 재조합 플라스미드 pK18mobsacB-algI-J-Tc2를 나타낸 것이다.
도 1e는 본 발명의 재조합 플라스미드 pAlgG를 나타낸 것이다.
도 2는 본 발명의 E1 균주에 의해 생산된 폴리머를 나타낸 것이다.
도 3은 산 가수분해된 폴리머의 산성당 함량에 대한 HPLC 분석 결과를 나타낸 것이다.
도 4는 본 발명의 E1 균주(A) 및 이의 algI가 녹다운된 돌연변이체(B)에 의해 생산된 폴리머의 1H NMR 스펙트럼을 나타낸 것이다.
도 5는 P. 알킬페놀리아 KL28의 alg 유전자 클러스터의 구성(A) 및 AlgG 아미노산 서열의 일부(B)를 나타낸 것으로, KL28과 동일한 아미노산은 점으로 표시한다(KL28, P. alkylphenolia; PAO1, P. aeruginosa PAO1; PSY, P. syringaepv. syringae B728a; PfO1, P. fluorescens PfO1; PEL48, P. entomophila L48; PPF1, P. putida F1; KT2440, P. putida KT2440; 및 E1, spontaneous mutant of KL28).
도 6a는 본 발명의 E1 균주가 mucA 유전자에 점 돌연변이(화살표로 표시된 위치)를 보유함을 나타낸 것이다.
도 6b는 본 발명의 E1 균주가 algG 유전자에 점 돌연변이(화살표로 표시된 위치)를 보유함을 나타낸 것이다.
도 7은 본 발명의 E1 균주에 의한 AcPM의 생산(A)과 점성(B)에 대한 글리세롤 및 NaCl의 영향을 나타낸 것이다.
도 8은 고점성(흑색선) 및 저점성(적색선)의 배양물 배지로부터 수득된 AcPM의 분자량 분포를 나타낸 것이다.
도 9는 본 발명의 E1 균주에 의해 생산된 AcPM(열린 기호)와 상업적 알지네이트(닫힌 기호)의 유동성을 나타낸 것으로, 점성에 대한 폴리머 농도의 영향(A), 온도의 영향(B)(고정된 온도에서 측정(세모), 실온에 도달한 후 측정 (네모)), pH의 영향(C), 염의 영향(D)(NaCl (네모), MgCl2(세모), 및 CaCl2(원))을 각각 나타낸 것이다.
Claims (12)
- (1) MucA(anti-sigma factor) 단백질의 활성을 감소시키는 mucA유전자의 169번째 염기가 C에서 T로 치환된유전적 변형; 및
(2) AlgG(mannuronan C-5-epimerase)단백질의 활성을 감소시키는 algG유전자의 1264번째 염기가 G에서 C로 돌연변이 되어 생성되는 아미노산이 글리신에서 아르기닌으로 치환된 유전적 변형;을 포함하는, 아세틸화된 폴리만누로네이트를 생산하는 슈도모나스 속 균주(KACC91330P). - 삭제
- 삭제
- 삭제
- 제 1항에 있어서,
AlgG를 코딩하는 핵산 분자로 형질전환되어, 알긴산을 생산하는 슈도모나스 속 균주. - 제 1항에 있어서,
algI(acetylase) 유전자가 녹아웃된 유전적 변형을 추가로 포함하고, 폴리만누로네이트를 생산하는 슈도모나스 속 균주. - 삭제
- 삭제
- 삭제
- 삭제
- 삭제
- 삭제
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Non-Patent Citations (4)
Title |
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Carbohydrate Research, Vol.308:417-422(1998). * |
Carbohydrate Research, Vol.308:417-422(1998).* |
J. Bacteriol., Vol.176(7):1821-1830 (1994). * |
J. Cent. South Univ. (Med. Sci.), Vol.34(12):1196-1201 (2009). * |
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