퍼지 콤플렉스
Fuzzy complex

퍼지 복합체는 단백질 복합체로 구조적 모호성 또는 다원성이 존재하며 생물학적 기능에 [1][2]필요하다.구성상 모호한 영역의 변경, 잘라내기 또는 제거는 해당 [3][4][5]복합체의 활동에 영향을 미친다.퍼지 복합체는 일반적으로 본질적으로 무질서한 [6][7]단백질에 의해 형성된다.구조적 다양성은 보통 애매한 논리에 따른 단백질 복합체의 기능적 다양성의 기초가 된다.뉴클레오좀의 독특한 결합모드는 또한 퍼지니스(fuzzy)[11][12]의 특별한 경우로 간주된다.
이력
거의 50년 동안 분자생물학은 두 가지 교리에 기반을 두고 있었다: (i) 단백질의 생물학적 기능을 독특한 3차원 구조와 동일시하는 것과 (ii) 단백질 복합체의 정교한 특이성을 가정하는 것.특이성/선택성은 단백질과 그 배위자(다른 단백질, DNA, RNA 또는 작은 분자) 사이에 형성된 명확한 일련의 상호작용에 의해 보장된다.그러나 많은 단백질 복합체는 기능적으로 중요한/임계 영역을 포함하며 복합체 내에서 매우 역동적인 상태를 유지하거나 다른 구조를 [13]채택합니다.이 현상을 퍼지라고 합니다.가장 적절한 예는 Cdc4의 SCF 서브유닛에 [14]인산화 의존적으로 결합하는 사이클린 의존성 키나제 억제제 Sic1이다.인산화 시 규칙적인 2차 구조가 얻어지지 않으며 복합체 [15]내 다른 인산화 부위가 교환된다.
퍼지 복합체 분류
단백질 복합체의 구조적 모호성은 광범위한 [1]스펙트럼을 포함한다.다형복합체에서 단백질은 동일한 파트너에 결합할 때 2개 이상의 다른 배열을 채택하고 이러한 배열을 [16]해결할 수 있다.클램프, 측면 및 랜덤[20][21] 복합체는 [17]동적이므로 애매한 구성이 서로 교환되어 해결할 수 없습니다.퍼지 복합체의 상호작용은 대개 짧은 [22]모티브에 의해 매개된다.측면 영역은 예를 들어 링커 히스톤 C 말단 도메인 및 H4 히스톤 N 말단 [24]도메인의 경우 아미노산 조성이 유지되는 한 배열 변화에 내성이 있다.
퍼지 영역을 통한 규제 경로
퍼지 영역은 일시적인 [27]상호작용을 통해 결합 인터페이스의 구조 평형 또는 유연성을 조절합니다.동적 영역은 바인딩[28] 사이트와 경쟁하거나 대상으로 [29]연결할 수도 있습니다.추가 [8][30]상호작용에 의한 퍼지 영역의 수정 또는 번역 후 수정은[31][32] 결합 친화성 또는 특이성에 영향을 미친다.대체 스플라이싱은 [33][34][35]복합체에 상황 의존적 결합(예: 조직 특이성)을 초래하는 퍼지 영역의 길이를 변조할 수 있다.EGF/MAPK, TGF-β 및 WNT/윙리스 신호 경로는 조직 특이적 퍼지 영역을 사용한다.
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