내부 동원체 단백질은 INCENP [5] [6] [7] 유전자 에 의해 인간에서 암호화되는 단백질 이다.
포유류의 세포에서, 동원체 상호작용 단백질의 두 가지 광범위한 그룹이 설명되었다: 구성적 으로 동원체 단백질과 '승객'[8] 단백질이다. 구성 단백질은 CENPA (중심단백질 A), CENPB , CENPC1 , CENPD 를 포함한다.
'승객단백질'이라는 용어는 [9] 세포 주기의 특정 단계에서 동원체에 국재하는 광범위한 단백질 집합을 포함한다. 여기에는 CENPE, MCAK , KID , 세포질 다이네인(예: DYNC1H1 ), CliPs(예 : CLIP1) 및 CENPF/미토신(CENPF)이 포함 된다. 승객 단백질 그룹의 초기 구성원인 내부 동원체 단백질(INCENPs)[5] 은 유사분열 초기 염색체를 따라 광범위한 국재성을 나타내지만 세포 주기가 중간 변형 단계로 진행됨에 따라 동원체에 점차 집중된다. 말단기 동안, 단백질은 세포간 교량의 중간체 안에 위치하고, 그곳에서 사이토키네시스 [7] [10] 후에 폐기된다.
INCENP는 염색체 승객 복합체의 조절 단백질이다. 이는 촉매 단백질 Aurora B의 조절에 관여합니다. 그것 은 두 개의 다른 단백질 인 Survivin과 Borealin 과 함께 이 기능을 수행합니다.이 단백질들은 촘촘한 세 개의 나선형 다발을 형성한다.INCENP의 N 터미널 도메인은 이 3개의 헬리컬번들의 [11] 형성에 관여하는 도메인입니다.
상호 작용 INCENP는 H2AFZ ,[12] Survivin [13] 및 CDCA8 과 [14] 상호작용하는 것 으로 나타났습니다. ARK 결합 영역은 오로라 관련 키나제에 결합하는 데 필요하고 충분한 것으로 밝혀졌다. 이 상호작용은 [15] 효모 의 세포분열 과 염색체 분리의 조정과 관련이 있다.
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