How do proteins find their way to the endoplasmic reticulum
		• 1. An mRNA encoding the secretory protein binds to a cytosolic ribosome. • 2. The first 70 or so amino acids are translated. Since approximately 30 amino acids of the protein remain buried in the ribosome at any one time this leaves approximately 30 amino acids on the N- terminus of the protein sticking out of the ribosome. • These 30 amino acids encode a signal sequence, which binds with the signal recognition particle or SRP in the ribosome.