KR20120018674A - 동중체로 표지된 단백질 및 펩티드를 큰 질량의 y-타입 이온을 이용하여 정량분석하는 방법 - Google Patents
동중체로 표지된 단백질 및 펩티드를 큰 질량의 y-타입 이온을 이용하여 정량분석하는 방법 Download PDFInfo
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Abstract
Description
도 2는, 본 발명의 라벨링제가 펩티드 및 단백질에 결합하는 반응을 도식적으로 나타낸 것이다.
도 3은, 분석체의 아민과 결합한 라벨링제가 탄뎀질량분석 과정에서 분해되었을 때 생성될 수 있는 조각이온들의 종류를 개략적으로 나타낸 것이다.
도 4는, 2개 이상의 라벨링제와 결합한 펩티드를 탄뎀질량분석하였을 때 이론적으로 생성될 수 있는 탄뎀질량분석 스펙트럼을 나타낸 것이다.
도 5는, 모델 펩티드 2종과 본 발명의 일실시예에 따른 라벨링제를 결합시킨 후 각각을 전자분무(ESI) 질량분석한 결과를 나타낸 것이다.
도 6은, N-말단에 1개의 아민을 가지고 있는 펩티드 LISFYAGR에 본 발명의 일실시예에 따른 라벨링제가 결합된 어미이온 중 +2전하를 띠는 이온(MH2 2+)을 사중극자 이온트랩 내에서 선택하여 공명여기 충돌유래 분해하여 얻은 탄뎀질량분석 스펙트럼을 나타낸 것이다.
도 7은, N-말단에 1개의 아민을 가지고 있는 펩티드 LISFYAGR에 본 발명의 일실시예에 따른 라벨링제가 결합된 어미이온 중 +1전하를 띠는 이온(MH+)을 사중극자 이온트랩 내에서 선택하여 공명여기 충돌유래 분해하여 얻은 탄뎀질량분석 스펙트럼을 나타낸 것이다.
도 8은, N-말단과 리신의 측쇄에 각각 1개씩 총 2개의 아민을 가지고 있는 펩티드 LISFYAGK에 본 발명의 일실시예에 따른 라벨링제가 결합된 어미이온 중 +2전하를 띠는 이온(MH2 2+)을 사중극자 이온트랩 내에서 선택하여 공명여기 충돌유래 분해하여 얻은 탄뎀질량분석 스펙트럼을 나타낸 것이다.
도 9는, N-말단과 리신의 측쇄에 각각 1개씩 총 2개의 아민을 가지고 있는 펩티드 LISFYAGK에 본 발명의 일실시예에 따른 라벨링제가 결합된 어미이온 중 +1전하를 띠는 이온(MH+)을 사중극자 이온트랩 내에서 선택하여 공명여기 충돌유래 분해하여 얻은 탄뎀질량분석 스펙트럼을 나타낸 것이다.
도 10은, 본 발명의 일실시예에 따른 라벨링제로 표지된 모델 펩티드 LISFYAGR(도 10(a))과 LISFYAGK(도 10(b))의 +2가 전하를 띠는 어미이온(MH2 2+)을 사중극자 이온트랩에서 탄뎀질량분석하였을 때 나타나는 yS 정량신호의 세기가 전체 조각이온들의 신호세기의 총 합에서 차지하는 비율을 나타낸 것이다.
도 11은, 본 발명의 일실시예에 따른 라벨링제로 표지된 모델 펩티드LISFYAG(도 11(a))과 LISFYAGK(도 11(b))의 +1가 전하를 띠는 어미이온(MH+)을 사중극자 이온트랩에서 탄뎀질량분석하였을 때 나타나는 yS 정량신호의 세기가 전체 조각이온들의 신호세기의 총 합에서 차지하는 비율을 나타낸 것이다. 도 11(c)는, 본 발명의 일실시예에 따른 라벨링제로 표지된 모델 펩티드 LISFYAGR의 +1가 전하를 띠는 어미이온을 MALDI 이온화법으로 생성하여 TOF/TOF 장비에서 탄뎀질량분석하였을 때 나타나는 bS 정량신호의 세기비를 나타낸 도면이다.
도 12(a)는, N-말단과 리신의 측쇄에 각각 1개씩 총 2개의 아민을 가지고 있는 펩티드 LISFYAGK에 Val-tag이 결합된 어미이온 중 +2전하를 띠는 이온(MH2 2+)을 사중극자 이온트랩 내에서 선택하여 공명여기 충돌유래 분해하여 생성된 MS2 탄뎀질량분석 스펙트럼을 나타낸 것이며, 도 12(b)는 MS2 탄뎀질량분석에서 생성된 LyS이온을 다시 이온트랩 내에서 선택하여 다시 충돌유래 분해하여 얻은 MS3 탄뎀질량분석 스펙트럼을 나타낸 것이다.
도 13은, Gln-tag의 HMBIT과 LMBIT으로 구분 표지하여 다양한 비율로 섞은 모델펩티드 LISFYAGK를 탄뎀질량분석하여 생성된 LyS 및 HyS이온의 신호 세기비로 정량분석을 수행하여 얻은 표준정량분석커브를 나타낸 것이다.
Claims (13)
- 제1항에 있어서, 상기 RA 및 RC는 각각 메틸이고, RA 및 RC 중 적어도 하나는 하나 이상의 중수소를 포함하는 것을 특징으로 하는 정량방법.
- 제2항에 있어서, 상기 RA 및 RC는, 각각 CH3 및 CD3이거나, 또는 각각 CD3 및 CH3인 것을 특징으로 하는 정량방법.
- 제1항에 있어서, 상기 RB는 천연 또는 인공 아미노산 잔기의 측쇄인 것을 특징으로 하는 정량방법.
- 제1항에 있어서, 상기 RB는 직쇄 또는 가지쇄의 C1-18 알킬인 것을 특징으로 하는 정량방법.
- 제1항에 있어서, 상기 Linker는 N-하이드록시숙신이미딜기, N-하이드록시설포숙신이미딜기, 벤조트리아졸-1-일옥실기, 펜타할로벤질기, 4-니트로페닐기 및 2-니트로페닐기로 구성되는 군으로부터 선택되는 어느 하나인 것을 특징으로 하는 정량방법.
- 제1항에 있어서, 상기 라벨링제는 상기 화학식 1로 표시되는 화합물을 두 종류 이상 포함하는 것을 특징으로 하는 정량방법.
- 제7항에 있어서, 상기 두 종류 이상의 화합물 각각의 RA 및 RC에 포함된 중수소의 수가 상이하고, 상기 두 종류 이상의 화합물은 서로 중수소의 수가 동일한 것을 특징으로 하는 정량방법.
- 제8항에 있어서, 상기 하나의 화합물의 RA 및 RC가 각각 CH3 및 CD3이고, 상기 다른 하나의 화합물의 RA 및 RC는 각각 CD3 및 CH3인 것을 특징으로 하는 정량방법.
- 제1항에 있어서, 상기 분석체는 단백질, 탄수화물 또는 지질인 것을 특징으로 하는 정량방법.
- 제10항에 있어서, 상기 분석체는 펩티드인 것을 특징으로 하는 정량방법.
- 제10항에 있어서, 상기 분석체는 핵산, 핵산 유도체 또는 스테로이드인 것을 특징으로 하는 정량방법.
- 제1항에 있어서, 상기 정량방법은 사중극자 이온트랩 질량분석기를 이용하는 것을 특징으로 하는 정량방법.
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EP11820170.6A EP2610243A4 (en) | 2010-08-23 | 2011-08-23 | Labeling agent and amino acid sequence using same, and method for performing simultaneous quantitative analysis of multiple proteins |
CN201180048175.4A CN103228621B (zh) | 2010-08-23 | 2011-08-23 | 标记试剂以及利用其的多肽和蛋白的测序及定量方法 |
PCT/KR2011/006225 WO2012026743A2 (ko) | 2010-08-23 | 2011-08-23 | 라벨링제 및 이를 이용한 아미노산 서열 및 단백질 다중 정량 동시 분석방법 |
US13/818,489 US8809012B2 (en) | 2010-08-23 | 2011-08-23 | Labeling agent and methods for simultaneous sequencing and quantification of multiple peptides and proteins using the same |
JP2013525824A JP5683706B2 (ja) | 2010-08-23 | 2011-08-23 | ラベリング剤とこれを用いたアミノ酸配列およびタンパク質多重定量同時分析方法 |
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