Component of the asymmetric unit membrane (AUM); a highly specialized biomembrane elaborated by terminally differentiated urothelial cells. May play an important role in regulating the assembly of the AUM (By similarity).
Cell membrane ; Single-pass type I membrane protein . Heterodimer formation with UPK1A is a prerequisite to exit out of the endoplasmic reticulum (ER). .
Expressed in ureter.
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