Desmosomes and Hemidesmosomes:
- These are anchoring junctions held together by linker protein filaments called cadherins or integrins extending from button like thickenings called plaques.
- Distributes tension and prevents tearing.
- e.g. skin and heart muscle
Adherens Junctions
- Plaque which attaches to membrane proteins and the microfilaments of the cytoskeleton
- Often form adhesion belts.
- Resist separation in contractile activities such as peristalsis
- Adhering junctions maintain cellular position
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