11. PTP1B is localized to the cytoplasmic face of the endoplasmic reticulum . 12. It is found in the endoplasmic reticulum and is highly conserved. 13. The conversion of zymosterol into cholesterol happens in the endoplasmic reticulum . 14. However, the endomplasmic reticulum and the golgi apparatuses appear unchanged. 15. KKXX-like motifs are predicted endoplasmic reticulum membrane retention signals. 16. C5SD is located in both the endoplasmic reticulum and lipid particles. 17. The endoplasmic reticulum is the laundry room of the cell. 18. The rough endoplasmic reticulum is especially prominent in cells such as hepatocytes. 19. The sarcoplasmic reticulum plays a major role in excitation-contraction coupling. 20. The major intracellular compartments are endoplasmic reticulum , Golgi apparatus and mitochondria.
