Plasma membrane proteins are inserted into the membrane in the ____er______________. the address information for protein sorting in a eukaryotic cell is contained in the ___amino acid sequence_______________ of the proteins. proteins enter the nucleus in their ____folded______________ form. proteins that remain in the cytosol do not contain a ____sorting signals______________. proteins are transported into the golgi apparatus via ____transport vesicles______________. the proteins transported into the endoplasmic reticulum by __________________ are in their __________________ form.