MCB 2610 Chapter Notes - Chapter 2 & 4: Magnetosome, Lipid Bilayer, Transfer Rna
8 Sep 2016
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Made up of protein, lipid, iron; found in aquatic organisms. Magnetite particles (fe3o4) for orientation in earth"s magnetic field-swim toward nutrient-rich sediments. Cell has to be in a watery environment to take advantage of magnetosomes. Observed only in prostheobacter; thought to be encoded by eukaryotic tubulin genes obtained by horizontal gene transfer. Avery welch mcb 2610 microbiology week 6-7 chapter 2 & 4 bacteria & archaea. Mreb/mbl maintains cell shape, segregates chromosomes, localizes proteins. Involved in cell wall synthesis during cell division. Cres (crescentin) induces curvature in curved rods. Mind prevents polymerization of ftsz at cell poles. Observed in many species including vibrio cholera and c. crescentus: during protein synthesis what molecules become associated with the ribosomes? trna. They only have a few genes; these genes are non-essential. Chromosomes have important genes and lots of them. The cell membrane: all cells have a plasma membrane (pm) Separates the interior of the cell from the external environment.
