BIOL 102 Lecture Notes - Lecture 7: Peripheral Membrane Protein, Membrane Transport Protein, Osmosis
Document Summary
Lecture 7 - roles of proteins and the effects of osmosis and gradience. Lipid anchored proteins: lipid is holding the protein. Recognition by receptor protein changes the shape of it; conformational change noti es other proteins around it; sending information around the cell. Larry frye and michael edidin labelled membrane proteins of mouse and human cells, and hybridized them to see how the proteins would move; proteins were mixed and indicated that proteins move around the cell; diffuse around. Not all diffuse around; some are anchored, and cell does not want it to move around. Researchers use proteomes to distinguish the difference between different proteins. Carriers and channels transport things into the cell when it is not permeable to the membrane. Carrier protein binds to the solute and empties cargo inside. Channel protein opens channel to the allow solute to go through. Channels and carriers has speci city; controls what goes in or not.
