Lysosomes may originate directly from the endoplasmic reticulum, or from the Golgi membranes, and then associated with vesicles which have arisen by pinocytosis or phagocytosis. Protein granules synthesized by the ribosomes are seen in enlargements of the endoplasmic reticulum.. These if budded off, would give rise to bodies having the characteristics of lysosomes. There is also evidence that the lysosomes originate from the Golgi complex. It is possible that the Golgi complex buds off primary lysosomes containing hydrolytic enzyme. The lysosomes are so called because they contain lytic or destructive enzymes. The lysosomes show polymorphism in different cell types, and even within a single cell.
No comments:
Post a Comment