SLC39A4 is a gene that provides instructions for making a protein involved in transporting zinc into cells. Zinc is an essential mineral that plays a crucial role in various biological processes, including immune function, wound healing, and DNA synthesis. Mutations in the SLC39A4 gene can lead to a condition known as acrodermatitis enteropathica, which is characterized by zinc deficiency. This deficiency can cause symptoms such as skin rashes, diarrhea, and hair loss. Understanding the function of SLC39A4 is important for diagnosing and treating related health issues.