Final answer:
Oligosaccharyl Transferase (OST) is an enzyme involved in protein glycosylation, which is the process of adding sugar molecules to proteins. It catalyzes the transfer of an oligosaccharide from a lipid molecule to specific amino acid residues on a growing protein chain.
Step-by-step explanation:
Oligosaccharyl Transferase (OST) is an enzyme involved in protein glycosylation, which is the process of adding sugar molecules to proteins.
It plays a crucial role in the modification and maturation of proteins in the rough endoplasmic reticulum (RER) and the Golgi apparatus.
OST catalyzes the transfer of an oligosaccharide (short sugar chain) from a lipid molecule to specific amino acid residues on a growing protein chain.