이 유전자는 폴리콤 유전자의 일원인 드로소필라 다종 유전자의 상동체이다.이 유전자 제품은 EDR2와 척추동물 폴리콤 단백질 BMI1을 포함하는 다량체 단백질 복합체의 구성요소이다.유전자 생성물, EDR2 단백질, 그리고 드로소필라 다종 단백질은 호몰로지 도메인 I과 II라고 불리는 고도로 보존된 두 개의 도메인을 공유합니다.이러한 도메인은 단백질-단백질 상호작용에 관여하며, 이 유전자와 EDR2 [6]단백질에 의해 코드된 단백질의 헤테로다이머화를 매개할 수 있다.
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