Cytoskeleton

• Network of 3 different protein fibres which make the internal structural units in a cell
• Microtubules - transport materials around the cell in cytoplasm, in conjunction with motor proteins to facilitate motion
• Microfilaments - made of actin, a contractile protein also in muscle fibres, it gives structure to cells and help cell movement (normally found just under the plasma membrane)
• Intermediate filaments - gives mechanical strength to cells and helps maintain organelle’s positions in the cell
• Microtubules 2: Tubulin dimers → form long chains → 13 chains form one microtubule - Fibres made of the protein tubulin form the scaffold for… Centrioles, Cillia and Flagellum