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difference between hemidesmosomes and focal adhesions vs. tight junctions, desmosomes, adheren junctions, and gap junctions
- Hemi and focal are cell-matrix adhesion
- TJ, AJ, GJ, and desmosomes are cell-cell adhesion
Difference between Hemi adn FA vs. AJ and desmosomes.
- hemi and focal adhesions are made of integrins
- desmosomes and adheren junctions are made of cadherins
difference between adheren junctions and gap junctions?
- AJs are actin filaments
- gap junctions are intermediate filaments
- (i think desmosomes are too)
Because the binding of lectins to their specific sugar ligand requires extracellular Ca2+, they are called __.
What do detergents in terms of their ends?
- the nonpolar ends of the detergent molecules associate with the nonpolar residues of hte protein tha thad previously been in contact with the fatty acid chains
- the polar ends interact with the surrounding water molecules, keeping the protein in solution
What kind of domains do selectins have?
- lectin-like domain
- EGF- like domain
- structural domain, which can be repeat domains of different kinds
What are the IG-like domains bound by?
What do calcium ions do in cadherins?
are situated between the successive domains of the cadherin where they play a critical role in maintaining the rigidity of the extracellular portion of hte protein
What do adherens and tight junctions do that desmosomes and gap junctions dont?
- adherens and tight junctions encircle the cell
- gap junctions adn desmosomes do not
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