The three different types of filaments differ in terms of polarity due to their constituent parts, called soluble subunits.
What is intermediate filaments?
- The intermediate filament's subunits are elongated, not spherical, and they are linked together in an antipolar way.
- Because of this lack of polarity in the overall filament, no motor proteins can move along intermediate filaments.
- Only complex multicellular creatures contain intermediate filaments.
- Intermediate filaments are more durable and essentially serve as the cell's structural framework.
- Because the tubulin subunits that make up the microtubule are heterodimers of alpha and beta tubulin, the microtubule is structurally polar.
- The microtubule's lattice is completely polarized along its whole length, not just at its two ends.
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