KR102244813B1 - L-메티오닌 검출용 센서 및 이를 이용하는 l-메티오닌 검출 방법 - Google Patents
L-메티오닌 검출용 센서 및 이를 이용하는 l-메티오닌 검출 방법 Download PDFInfo
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- KR102244813B1 KR102244813B1 KR1020190100880A KR20190100880A KR102244813B1 KR 102244813 B1 KR102244813 B1 KR 102244813B1 KR 1020190100880 A KR1020190100880 A KR 1020190100880A KR 20190100880 A KR20190100880 A KR 20190100880A KR 102244813 B1 KR102244813 B1 KR 102244813B1
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- Prior art keywords
- methionine
- val
- leu
- lys
- ala
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Abstract
Description
도 2의 (a) 내지 (d)는, 본원의 일 실시예에 있어서, L-메티오닌의 존재 및 부재 하에서, CouA를 포함하는 YFP-MetQ 돌연변이체들의 형광 스펙트럼을 나타낸 그래프이다.
도 3은, 본원의 일 실시예에 있어서, 도 2의 데이터로부터 계산된 CouA를 포함하는 YFP-MetQ 돌연변이체들의 FRET 비율 변화를 나타낸 그래프이다.
도 4의 (a) 및 (b)는, 본원의 일 실시예에 있어서, L-메티오닌으로 적정한 YFP-MetQ-R189CouA의 (a) 형광 스펙트럼 및 (b) FRET 비율 변화를 나타낸 그래프이다.
도 5의 (a) 및 (b)는, 본원의 일 실시예에 있어서, D-메티오닌으로 적정한 YFP-MetQ-R189CouA의 (a) 형광 스펙트럼 및 (b) FRET 비율 변화를 나타낸 그래프이다.
도 6은, 본원의 일 실시예에 있어서, 20 가지 천연 아미노산 및 D-메티오닌에 대한 YFP-MetQ-R189CouA의 선택성 분석 결과를 나타낸 그래프이다.
도 7은, 본원의 일 실시예에 있어서, L-메티오닌, D-메티오닌 및 L-글리신에 대한 YFP-MetQ-R189CouA 돌연변이체의 선택성 분석 결과를 나타낸 그래프이다.
도 8의 (a) 및 (b)는, 본원의 일 실시예에 있어서, L-메티오닌으로 적정된 YFP-MetQ-R189CouA-H88F의 (a) 형광 스펙트럼 및 (b) FRET 비율 변화를 나타낸 그래프이다.
도 9 의 (a) 및 (b)는, 본원의 일 실시예에 있어서, D-메티오닌으로 적정된 YFP-MetQ-R189CouA-H88F의 (a) 형광 스펙트럼 및 (b) FRET 비율 변화를 나타낸 그래프이다.
도 10은, 본원의 일 실시예에 있어서, 20 개의 천연 아미노산 및 D-메티오닌에 대한 YFP-MetQ-R189CouA-H88F의 선택성 분석 결과를 나타낸 그래프이다.
도 11은, 본원의 일 실시예에 있어서, FBS에서 L-메티오닌 농도를 측정하기 위해 FBS로 적정된 YFP-MetQ-R189CouA-H88F의 형광 스펙트럼을 나타낸 그래프이다.
Claims (14)
- 서열번호 1의 아미노산 서열을 포함하는 메티오닌-결합 단백질; 형광 공여체로서 비천연 아미노산; 및 형광 수용체로서 형광 단백질
을 포함하는, L-메티오닌 검출용 센서로서,
상기 서열번호 1의 59 번 위치의 아미노산은 알라닌, 류신, 또는 페닐알라닌이고,
형광 공명 에너지 전이(fluorescence resonance energy transfer, FRET)에 기반하여 시료 중 L-메티오닌을 검출하는 것인, L-메티오닌 검출용 센서.
- 제 1 항에 있어서,
상기 비천연 아미노산은 L-(7-하이드록시쿠마린-4-yl)에틸글리신, 3-(6-아세틸나프탈렌-2-yl아미노)-2-아미노프로피온산, 아리코돈-2-yl알라닌, 및 이들의 조합들로 이루어진 군으로부터 선택되는 아미노산을 포함하는 것인, L-메티오닌 검출용 센서.
- 제 1 항에 있어서,
상기 형광 단백질은 황색 형광 단백질 (YFP), 변형된 황색 형광 단백질 (mYFP), 증강된 황색 형광 단백질 (eYFP), 녹색 형광 단백질 (GFP), 변형된 녹색 형광 단백질 (mGFP), 증강된 녹색 형광 단백질 (eGFP), 적색 형광 단백질 (RFP), 변형된 적색 형광 단백질 (mRFP), 증강된 적색 형광 단백질 (eRFP), 청색 형광 단백질 (BFP), 변형된 청색 형광 단백질 (mBFP), 증강된 청색 형광 단백질 (eBFP), 남색 형광 단백질 (CFP), 변형된 남색 형광 단백질 (mCFP), 증강된 남색 형광 단백질 (eCFP), 및 이들의 조합들로 이루어진 군으로부터 선택되는 것을 포함하는 것인, L-메티오닌 검출용 센서.
- 제 1 항에 있어서,
상기 서열번호 1의 40 번 위치의 아미노산은 알라닌, 발린, 이소류신, 류신, 또는 메티오닌인 것인, L-메티오닌 검출용 센서.
- 제 1 항에 있어서,
상기 메티오닌-결합 단백질은 서열번호 2 내지 서열번호 6 중 어느 하나의 아미노산 서열을 포함하는 것인, L-메티오닌 검출용 센서.
- 삭제
- 제 1 항에 있어서,
상기 메티오닌-결합 단백질은 서열번호 7 내지 서열번호 9 중 어느 하나의 아미노산 서열을 포함하는 것인, L-메티오닌 검출용 센서.
- 제 1 항에 있어서,
상기 서열번호 1의 112 번 위치의 아미노산은 알라닌, 류신, 또는 아스파르트산인 것인, L-메티오닌 검출용 센서.
- 제 1 항에 있어서,
상기 메티오닌-결합 단백질은 서열번호 10 내지 서열번호 12 중 어느 하나의 아미노산 서열을 포함하는 것인, L-메티오닌 검출용 센서.
- 제 1 항에 있어서,
상기 비천연 아미노산은 서열번호 1 내지 서열번호 12 중 어느 하나의 154 번, 157 번, 160 번, 또는 181 번 위치로 치환된 것인, L-메티오닌 검출용 센서.
- 제 1 항에 있어서,
상기 형광 단백질은 서열번호 1 내지 서열번호 12 중 어느 하나의 N-말단에 연결된 것인, L-메티오닌 검출용 센서.
- 제 1 항 내지 제 5 항 및 제 7 항 내지 제 11 항 중 어느 한 항에 따른 L-메티오닌 검출용 센서를 L-메티오닌과 반응시켜 L-메티오닌을 검출하는 단계를 포함하는, L-메티오닌의 검출 방법.
- 제 12 항에 있어서,
상기 방법은 L-메티오닌의 농도에 따른 상기 L-메티오닌 검출용 센서의 FRET 비율의 변화를 측정함으로써 L-메티오닌을 검출하는 것인, L-메티오닌의 검출 방법.
- 제 1 항 내지 제 5 항 및 제 7 항 내지 제 11 항 중 어느 한 항에 따른 L-메티오닌 검출용 센서를 포함하는, L-메티오닌 검출용 조성물.
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