Steroid transmembrane transporter that functions in the reabsorption of conjugated steroids in the kidney and is involved in steroid homeostasis. Similar uptake function as Isoform 1. Lack of transporter activity. Transport is chloride sensitive and transtimulated by glutaric acid (PubMed:31553721). Transport is inhibited by anionic compounds from different chemical classes (PubMed:31553721). Localized to the kidney (PubMed:31553721). Highly specific expression pattern in the nephron, localized to segment 3 of the proximal tubule (PubMed:31553721). Localized to the kidney (PubMed:31553721). Highly specific expression pattern in the nephron, localized to segment 3 of the proximal tubule (PubMed:31553721). Presence of two potential AG acceptor sites at the splice junction between exons 9 and 10, thus resulting in two different splice variants. Belongs to the major facilitator (TC 2.A.1) superfamily. Organic cation transporter (TC 2.A.1.19) family.