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Cell Motility - Coggle Diagram
Cell Motility
Swimming motility
Flagella
Found in Bacteria
Made of the protein flagellin
Rotation driven by proton motive force
Differnt cell arrangements
Made up of 3 parts:
1-Filament
2-Hook
3-Basal body
Gram negative bacteria have 2 sets of rings
Gram postive bacteria have 1 set of rings
Due to cell wall/membrane sturcture
Run and tumble
Archaella
Found in Archae
Protein more closely related to Type VI pili
Rotation driven by ATP hydrolysis
Slower than bacteria
Surface motolity
Twitching motility
Requires type IV pili
Energy from A T P hydrolysis
Gliding motility
Smooth, continuous motion along long axis without external structures
Only in Bacteria
Euakryotes
Flagella
Long appendages that propel through whiplike motion
Protein called dynein
Cillia
Short flagella that beat in synchrony
Taxis - directed movement in response to chemical or physical stimuli
Chemotaxis - response to chemicals
Run and tumble
Chemoreceptors that sense attractants and repellents
Phototaxis - response to light
Allows phototrophic organisms to optimize position for receiving light
Photoreceptor: Protein acting as initial sensor that interacts with flagellar rotation proteins
