BIOB10Y3 Lecture Notes - Lecture 8: Fusion Protein, Photographic Emulsion, Endomembrane System
Document Summary
Chapter 8 cytoplasmic membrane systems: structure, function and. Materials are shuttled b/w organelles in small, membrane-bounded transport vesicles that bud from a donor membrane compartment. Transport vesicles move through the cytoplasm pulled by motor proteins that operate on tracks formed by microtubules and microfilaments of the cytoskeleton. The vesicles then fuse w/ the membrane of the acceptor compartment. Proteins are synthesized in the er are discharged (secreted) from the cell. Endocrine cells that release hormones, pancreatic acinar cells that release digestive enzymes, nerve cells that release neurotransmitters. Materials to be secreted are stored in large, densely packed, membrane-bound secretory granules. The endocytic pathway moves materials from the outer surface of the cell into the compartment. Proteins have sorting signals that are encoded in the aa sequence or in the attached oligosaccharides. 8. 2 a few approaches to the study of endomembranes.