Intracellular orphan receptor that binds numerous drugs and which is highly expressed in various proliferating cancer cells . Corresponds to the sigma-2 receptor, which is thought to play important role in regulating cell survival, morphology and differentiation . Under investigation for its potential diagnostic and therapeutic uses . May play a role as a regulator of cellular cholesterol homeostasis . May function as sterol isomerase . May alter the activity of some cytochrome P450 proteins .
Nucleus membrane ; Multi-pass membrane protein . Rough endoplasmic reticulum membrane ; Multi-pass membrane protein . Localized at cell membrane and in lysosomes in sterol-depleted cells when expression of endogenous TMEM97 is stimulated. .
Widely expressed in normal tissues. Expressed in pancreatic, renal, breast, colon, ovarian surface epithelial (OSE) cells. Highly expressed in various proliferating cancer cells (PubMed:23922215).
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