MCB 2610 Chapter Notes - Chapter 2 & 4: Aquaporin, Sterol, Hopanoids
6 Sep 2016
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Avery welch mcb 2610 microbiology week 6-7 chapter 2 & 4 bacteria & archaea. Receptors for detection of and response to chemicals in surroundings. Transport systems (cell growth is often limited by these) Metabolic processes (electron transport chain; located in membrane of bacteria) Etc shuttling protons from inside to outside of the cell to form an electron gradient, and then they come back in and make atp: fluid mosaic model of membrane structure. Membranes are lipid bilayers with floating proteins. Polar ends (hydrophilic interact with water) Non-polar tails (hydrophobic insoluble in water. Make up 20-30% of membrane proteins: integral. Amphipathic embedded within membrane, not easily extracted. The cell membrane: critical structural and functional properties of bacterial cell envelope. Pm may have sterol molecules called hopanoids in it to help with stability across temperature ranges. O2 and co2 are small and can diffuse across readily.
