이 유전자는 소나무샘에서 분비되는 1차 호르몬인 멜라토닌 수용체의 두 가지 고선질 형태 중 하나인 MT1단백질을 암호화하고 있다.이 수용체는 G단백질 결합 7트랜섬브레인 수용체로 포유류 순환기 리듬에 대한 멜라토닌 효과와 낮 시간에 영향을 받는 생식변화를 담당한다.수용체는 쉽게 감지할 수 있고 뇌의 두 특정 부위로 국부적으로 국소화되는 일체형 막 단백질이다.저체온성수프라치성 핵은 순환 리듬에 관여하는 것으로 보이는 반면 저체온성파스 결핵균은 멜라토닌의 생식 효과를 담당할 수 있다.[6]
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