이 유전자에 의해 암호화된 단백질은 나트륨에 독립적인 운반과 유기 음이온의 배설에 관여하는데, 그 중 일부는 잠재적으로 독성이 있다.인코딩된 단백질은 일체형 막 단백질로 주로 신장과 태반에서 발견되는데, 이 단백질은 잠재적으로 해로운 유기 음이온이 태아에게 도달하는 것을 막는 작용을 할 수 있다.[6]
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