아포토시스(apoptosis)에 관여하는 인간 MDM4 유전자는 RING 핑거 도메인과 추정핵 국재 신호를 포함한 490-아미노산 단백질을 암호화한다.모든 MDM 단백질이 포함하는 MDM4 추정 핵 국재 신호는 단백질의 C 말단 영역에 위치한다.mRNA는 흉선에서 높은 수준으로 발현되고 다른 모든 검사 조직에서는 낮은 수준으로 발현된다.시험관내 번역에 의해 생성된 MDM4 단백질은 MDM4 단백질의 N 말단 영역에 위치한 결합 도메인을 통해 p53과 상호작용한다.MDM4는 p53 결합 단백질[6] MDM2와 구조적으로 유의미한 유사성을 보인다.
^"Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^"Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
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