BIO130H1 Lecture Notes - Lecture 17: Endoplasmic Reticulum, Protein Targeting, Cell Membrane

• School: UTSG
• Department: Biology
• Course: BIO130H1
• Professor: All

Document Summary

Note how cytosol is roughly half of the cell volume. Below is in general, as different cells will have different volumes. Subcellular compartment or large macromolecular complex, often membrane- enclosed, that has a distinct structure, composition, and function. Nucleolus and centrosomes aren"t membrane-bound, and thus not organelles. Rer: involved in synthesis of trans-membrane secreted proteins. You have more membranes in a cell than around the cell due to all the organelles. Proteins and lipids made in the er delivered to the membranes of other organelles. Vesicle membrane: becomes part of the plasma membrane. Note that the leaflet not facing the cytosol stays not facing the cytosol no matter what. Vesicle: small, membrane-enclosed organelle in the cytoplasm of a eukaryotic cell. They shuttle components back and forth in the endomembrane system. Receptors on the budding compartment takes the correct protein to be transported.