Transmembrane protein 61 (TMEM61) is a protein that is encoded by the TMEM61 gene in humans. It is located on the first chromosome in humans and is highly expressed in the intestinal regions predominantly the kidney, adrenal gland and pituitary tissues. The protein, unlike other transmembrane protein in the region does not promote cancer growth. However, the TMEM61 protein when inhibited by secondary factors restricts normal activity in the kidney. The human protein shares many Orthologs and has been prevalent on Earth for millions of years.