考研资料：北京大学细胞生物学第六章基质与内膜(上).ppt

Chapter 6 Cytoplasmic matrix, Endomembrane system, Protein Sorting and membrane trafficking Learning objective 1. Compartmentalization in Eukaryotic Cells; 2. The structural and functional relationship among the ER, plexes, lysosomes and plasma membranes of eukaryotic cells; 3. The pathways of proteins targeting and sorting, and its mechanisms; 4. The ways of protein modifications and intracellular sites after they are synthesized; 5. Types of vesicle transport and their functions. Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. 1. partmentalization in Eukaryotic Cells ? Membranes divide the cytoplasm of eukaryotic cells into partments. Three categories in eukaryotic cells: (1) the endomembrane system: ER, plex, Lys., secretory vesicles. (2) the cytosol. (3) mitochondria, chloroplasts, peroxisomes, and the nucleus. ? Membrane-bound structures (organelles) are found in all eukaryotic cells. Evaluation only. Evaluation only. Created with Client Profile . Created with Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Copyright 2004-2011 Aspose Pty Ltd. ? Cytoplasmic matrix and its functions ? Cytoplasmic Matrix : The region of fluid content of the cytoplasm outside of the membranous organelles. Aqueous solution of large and small molecules including filaments of cytoskeleton which act anizer for some order. ? The Cytosol is the site of protein synthesis and degradation or modification . It also performs most of the cell ’ s intermediary metabolism . A. Cytoplasmic matrix (Cytosol) and Endomembrane System Evaluation only. Evaluation only. Created with Client Profile . Created with Client