The sarco(endo)plasmic reticulum Ca2+‐ATPase mRNA isoform, SERCA 3, is expressed in endothelial and epithelial cells in various organs

Abstract
The sarco(endo)plasmic reticulum Ca2+-ATPase mRNA isoform, SERCA 3, was previously shown to be expressed in a great variety of muscle and non-muscle tissues [(1989) J. Biol. Chem. 264, 18561–18568] but its cellular localization within these organs was unknown. We have used in situ hybridization and RNase protection techniques to demonstrate that SERCA 3 mRNA is expressed in specific cell types, namely the endothelial and epithelial cells.