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Nobel Prize in Physiology or Medicine - 1974 For “the structure and functional organization of the cell” Christian de Duve George E. Palade Albert Claude
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Modern Cell Biology – Structure and Function A Membrane Bound Perspective 1938 - Electron microscope available Albert Claude – Rockefeller Institute used EM for visualizing cells Invented differential centrifugation and went on to discover the endoplasmic reticulum George Palade – Discovered ribosomes and determined that they carry out protein synthesis Went on to show that vesicles travel from ER to golgi to outside of the cell Christian de Duve – Used fractionation to isolate groups of enzymes discovered lysosome and perioxisome
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A WELL-KNOWN TECHNIQUE FOR USING 35 S OR 3 H TO STUDY PROTEIN MOVEMENT WITHIN A CELL
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After 10 minutes, insulin moves from ER to Golgi Pulse of pancreatic B cells with 3 H After 45 minutes, the protein is found in the secretory granules
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Flourescence Recovery after photobleaching (FRAP) Flourescence loss in photobleaching (FLIP) pg 608 in your book
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Three main types of coated vesicles:
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Clathrin is also involved in receptor mediated endocytosis http://www.abcam.com/
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BOTH Clathrin and COPI/II assembly requires GTPases
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