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Understanding Protein Secretion: The Role of Vesicles and the Golgi Apparatus

This overview explains the intricate process of protein secretion within cells. It begins with vesicles containing freshly synthesized proteins pinching off from the endoplasmic reticulum (ER). These vesicles then merge to form the Golgi apparatus, where proteins undergo further processing, such as the addition of carbohydrates. Completed protein-filled vesicles are pinched off from the Golgi, moving towards the cell membrane. The final step involves the vesicles fusing with the cell membrane, resulting in the secretion of proteins outside the cell.

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Understanding Protein Secretion: The Role of Vesicles and the Golgi Apparatus

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  1. SECRETION OF PROTEIN 1. Vesicle containing freshly synthesised protein pinches off 2. Pinched vesicles join up to form Golgi apparatus 3. Protein processed in the Golgi usually CHO added R.E.R. 4. Vesicles with finished protein pinched off 5. Vesicles move towards the cell membrane Cell membrane Secretory Cell 6. Vesicle fuses with cell membrane 7. Protein secreted

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