MICI 4218 Lecture Notes - Lecture 29: Spirochaete, Blood Film, Periplasm
12 May 2021
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Mici 4218 lecture 29 march 26, 2021 spirochetes. The flagellum is linked to the cytoplasmic membrane in both gram-negative and gram-positive bacteria. However, the flagellum is also linked to the outer membrane in gram-positive bacteria: coli swimming: run vs. tumble. Swimming toward an attractant (or away from repellents) is controlled by alteration the rotation of the flagella. Counterclockwise rotation (ccw: generates a run (swim) When the bacterium swims, it swims towards a gradient that is beneficial for it (ex. nutrients), resulting in less tumbling happening over time. Spirochetes flagella: distinguished by location of their flagella (in the periplasm, between cytoplasmic and outer membrane. Sometimes the flagella is referred to as an. However, the location of the flagella is slightly different with spirochetes. The flagellum is linked from head-to-toe to the body of the organism (in the periplasm). Surrounding the entire structure is the outer membrane.
