KR101765256B1 - 류코노스톡 속 균주 발현용 고복제수 셔틀벡터 - Google Patents
류코노스톡 속 균주 발현용 고복제수 셔틀벡터 Download PDFInfo
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Abstract
Description
도 2는 형광 활성 세포 분류기를 통한 플라스미드 랜덤 라이브러리의 스크리닝 과정을 나타낸 것이다. 연두색은 돌연변이가 없는 기존의 pCB4170 플라스미드를 이용해 발현한 녹색형광단백질, 빨간색은 original library, 파란색은 1st sorted library, 주황색은 2nd sorted library를 나타낸다.
도 3은 플라스미드 랜덤 라이브러리에서 발굴한 플라스미드에 의하여 발현되는 녹색형광단백질의 발현 정도를 (b) FACS를 이용하여 형광세기를 비교 분석한 것이고 (빨간색 : pCB4170 벡터를 함유한 류코노스톡; 파란색 : pCB4170 백터에 녹색형광단백질을 연결한 벡터를 함유하는 류코노스톡 시트리움, 연두색 : pCB4170 돌연변이 벡터(pCB4270)에 710 프로모터와 녹색형광단백질을 연결한 벡터를 함유하는 류코노스톡), (b) 웨스턴 블럿을 통하여 확인한 것이다 (pCB4170 벡터를 함유하는 류코노스톡 시트리움 : (1, 2번 레인); pCB4170에 와 녹색형광단백질을 연결한 벡터를 함유하는 류코노스톡 시트리움 : (3, 4번 레인); pCB4170 돌연변이 벡터(pCB4270)에 녹색형광단백질을 연결한 벡터를 함유하는 류코노스톡 시트리움: (5, 6번 레인).
도 4는 pCB4170과 돌연변이 벡터 pCB4270의 복제수를 qPCR을 통해 측정하고 분석한 결과이다.
도 5은 pCB4170 및 pCB4270 벡터에 재조합 단백질을 연결하여 발현양 및 활성도를 분석한 것으로, (a)는 SDS-PAGE를 통한 glutathione S-transferase (GST)의 발현양을 비교 분석한 것이며(pCB4170 벡터를 함유하는 류코노스톡 시트리움 : (1, 2번 레인); pCB4170 벡터에 GST유전자를 연결한 벡터를 함유하는 류코노스톡 시트리움 : (3, 4번 레인); pCB4270 벡터에 GST 유전자를 연결한 벡터를 함유하는 류코노스톡 시트리움 : (5, 6번 레인)), (b)는 알파 아밀라아제의 활성도를 전분 배지에서 iodine test를 이용해 분석한 것이고, (c)는 amylase activity assay kit를 이용하여 아밀라아제의 전분 분해 활성을 비교분석한 것이다.
Claims (8)
- 서열번호 1의 염기서열로 표시되는 DNA 단편을 함유하는 벡터.
- 제1항에 있어서, 서열번호 2의 염기서열로 표시되는 벡터.
- 제1항에 있어서, 대장균-류코노스톡 셔틀벡터인 것을 특징으로 하는 벡터.
- 제1항의 벡터에 목적 단백질을 코딩하는 유전자 삽입되어 있는 재조합 벡터.
- 제4항의 재조합 벡터가 도입되어 있는 재조합 미생물.
- 제5항에 있어서, 대장균 또는 류코노스톡 속 미생물인 것을 특징으로 하는 재조합 미생물.
- 다음 단계를 포함하는 목적단백질의 제조방법:
(a) 제5항 또는 제6항의 재조합 미생물을 배양하여, 상기 목적 단백질을 코딩하는 유전자에 의하여 발현되는 목적단백질을 생성시키는 단계; 및
(b) 상기 생성된 목적단백질을 수득하는 단계.
- 삭제
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