Summary
A network of protein filaments that maintains cell shape, anchors organelles and enables movement.
In depth
The cytoskeleton has three filament types: microfilaments (actin, 7 nm) support shape and movement, intermediate filaments (about 10 nm) provide tensile strength, and microtubules (tubulin, 25 nm) form tracks, the spindle, cilia and flagella.
It is dynamic, constantly assembling and disassembling. Motor proteins move cargo along it. It also anchors organelles and transmits mechanical signals from outside the cell.
Frequently asked questions
What is Cytoskeleton?
A network of protein filaments that maintains cell shape, anchors organelles and enables movement.
Which area of biology covers Cytoskeleton, and how advanced is it?
Cytoskeleton is one of the 52 topics in Cell Biology. It is rated Beginner, so it suits learners who are starting out in biology. Related topics in this area include Motor Proteins, Extracellular Matrix, Cytoplasm.
Can you give an example of Cytoskeleton?
Keratin intermediate filaments make skin cells strong; mutations cause blistering diseases.
What should I learn before Cytoskeleton?
Cytoskeleton is a Beginner topic, so no earlier topic is required. Other Beginner topics in Cell Biology that pair well with it include Cell Theory, Prokaryotic Cell, Eukaryotic Cell.
What topics are related to Cytoskeleton?
The closest topics to Cytoskeleton are Motor Proteins, Extracellular Matrix, Cytoplasm, Cell Junctions. Comparing them side by side is a good way to see how the ideas connect.
How can I check that I understand Cytoskeleton?
Read the summary and the in-depth section, then use the quick check on the interactive lesson for Cytoskeleton. To practise the whole of Cell Biology, use the Cell Biology quiz.
How is Cytoskeleton different from Motor Proteins?
Cytoskeleton: A network of protein filaments that maintains cell shape, anchors organelles and enables movement. Motor Proteins: Kinesin, dynein and myosin convert ATP energy into directed movement along microtubules or actin filaments. Read both side by side and note what each one explains.
How should I study Cytoskeleton step by step?
First, read the summary and write the definition in your own words. Second, read the in-depth section and note any example. Third, compare it with Motor Proteins and explain the difference aloud. Finally, take the Cell Biology quiz and come back to this page for any question you miss.