KR102210877B1 - 형광세기가 향상된 애기장대 유래 플라빈 모노뉴클레오타이드 결합 단백질 변이체들 - Google Patents
형광세기가 향상된 애기장대 유래 플라빈 모노뉴클레오타이드 결합 단백질 변이체들 Download PDFInfo
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- KR102210877B1 KR102210877B1 KR1020190120443A KR20190120443A KR102210877B1 KR 102210877 B1 KR102210877 B1 KR 102210877B1 KR 1020190120443 A KR1020190120443 A KR 1020190120443A KR 20190120443 A KR20190120443 A KR 20190120443A KR 102210877 B1 KR102210877 B1 KR 102210877B1
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- C—CHEMISTRY; METALLURGY
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- C07K—PEPTIDES
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Abstract
Description
도 2는 iLOV 1차 스크리닝 결과로 나온 라이브러리의 enrichment test를 나타낸다.
도 3은 iLOV 2차 스크리닝 결과로 나온 라이브러리의 enrichment test를 나타낸다.
도 4는 iLOV 1, 2차 라이브러리에서 선별된 SH3 및 BR1의 FACS 형광 세기를 나타낸다.
도 5는 iLOV 변이체들의 돌연변이가 도입된 위치를 나타낸다.
도 6은 SH3 및 BR1의 발광형광 패턴 분석을 나타낸다.
도 7은 SH3 및 BR1의 양자 수득률을 나타낸다.
도 8은 SH3 및 BR1의 열적안정성 분석을 나타낸다.
도 9는 SH3 및 BR1의 열적안정성 분석에서 실제 형광 세기를 나타낸다.
도 10은 iLOV 변이체들과 iLOV 및 야생형 LOV의 서열을 비교한 결과를 나타낸다.
Claims (13)
- iLOV(flavoprotein improved LOV) 대비 형광세기가 증가된 iLOV 변이체로서, 상기 iLOV 변이체는 서열목록 제2서열의 iLOV의 아미노산 서열의 일부를 포함하며, 서열목록 제2서열의 iLOV의 아미노산 서열 중 5번째 아미노산인 F(Phenylalanine)가 Y(Tyrosine)로 치환된 것을 포함하는 iLOV 변이체.
- 제 1 항에 있어서, 상기 iLOV 및 iLOV 변이체는 애기장대(Arabidopsis thaliana) 유래인 것을 특징으로 하는 iLOV 변이체.
- 제 1 항에 있어서, 상기 iLOV 변이체는 서열목록 제2서열의 야생형 iLOV의 아미노산 서열 중 79번째 아미노산인 K(Lysine)가 E(Glutamate)로; 84번째 아미노산인 F(Phenylalanine)가 L(Leucine)로; 91번째 아미노산인 D(Aspartate)가 N(Asparagine)으로; 및 104번째 아미노산인 L(Leucine)이 Q(Glutamine)로 치환된 것을 추가적으로 포함하는 iLOV 변이체.
- 제 1 항에 있어서, 상기 iLOV 변이체는 서열목록 제2서열의 야생형 iLOV의 아미노산 서열 중 29번째 아미노산인 E(Glutamate)가 G(Glycine)로, 78번째 아미노산인 K(Lysine)가 R(Arginine)로; 및 109번째 아미노산인 H(Histidine)가 R(Arginine)로 치환된 것을 추가적으로 포함하는 iLOV 변이체.
- 제 1 항의 iLOV 변이체를 코딩하는 핵산분자.
- 제 5 항의 핵산분자를 포함하는 벡터.
- 제 6 항에 있어서, 상기 벡터는 상기 핵산분자를 리포터 유전자로서 포함하며, 발현하고자 하는 목적 단백질을 추가로 포함하는 것을 특징으로 하는 벡터.
- 제 6 항의 벡터를 포함하는 숙주세포.
- 제 1 항의 iLOV 변이체, 제 5 항의 핵산분자 또는 제 6 항의 벡터를 포함하는 형광 발색용 조성물.
- 제 7 항의 벡터를 발현시키는 단계를 포함하는 목적 단백질의 발현을 분석하는 방법.
- 제 7 항의 벡터를 발현시켜 목적 단백질을 생성시키는 단계; 및 상기 생성된 목적 단백질을 분리하는 단계;를 포함하는 목적 단백질의 분리정제 방법.
- 하기의 단계를 포함하는 ilOV 변이체의 제조방법:
a) 제 1 항의 iLOV 변이체를 코딩하는 핵산분자를 포함하는 벡터를 포함하는 숙주세포를 배양하는 단계; 및
b) 상기 숙주세포에 의해 발현된 iLOV 변이체를 회수하는 단계.
- 하기의 단계를 포함하는 iLOV 변이체의 스크리닝 방법:
a) 제 1 항의 iLOV 변이체 또는 이를 코딩하는 핵산분자에 추가적으로 무작위적인 점 돌연변이를 가한 iLOV 변이체 또는 이를 코딩하는 핵산분자의 라이브러리를 구축하는 단계; 및
b) 상기 라이브러리에서 서열목록 제2서열의 iLOV 단백질 보다 형광세기가 증가된 iLOV 변이체 또는 이를 코딩하는 핵산분자를 선별하는 단계.
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JP2021568584A JP7290295B2 (ja) | 2019-09-30 | 2020-09-29 | 蛍光強度が向上したシロイヌナズナ由来フラビンモノヌクレオチド結合タンパク質変異体 |
US17/629,016 US20220267387A1 (en) | 2019-09-30 | 2020-09-29 | Flavin mononucleotide-binding protein variants having improved fluorescence intensity derived from arabidopsis thaliana |
EP20872592.9A EP3988562A4 (en) | 2019-09-30 | 2020-09-29 | FLAVIN MONONUCLEOTIDE-BINDING PROTEIN VARIANTS WITH ENHANCED FLUORESCENCE INTENSITY DERIVED FROM ARABIDOPSIS THALIANA |
PCT/KR2020/013355 WO2021066528A1 (ko) | 2019-09-30 | 2020-09-29 | 형광세기가 향상된 애기장대 유래 플라빈 모노뉴클레오타이드 결합 단백질 변이체들 |
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THE JOURNAL OF PHYSICAL CHEMISTRY B, 2017, VOL.121(43),P.10018_10025 * |
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