Intrinsic and Extrinsic proteins
- Created by: khairaali03
- Created on: 30-11-20 18:35
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- membrane component
- Extrinsic protein
- Amino acids on surface of protein are hydrophilic
- To interact with the hydrophilic phosphate heads in the bilayer
- Transport of molecules across a membrane
- Spans one layer of phospholipid bilayer or associated to one of the surfaces of the bilayer
- Outside of the layer
- Amino acids on surface of protein are hydrophilic
- Intrinsic protein
- Spans both layers of the phospholipid bilayer
- Amino acids on surface of the protein are hydrophobic
- To interact with the hydrophobic fatty acids tails in the bilayer
- Makes membrane selectively permeable
- Transport proteins
- Channel proteins
- Hydrophilic channel allows movement of charged and polar molecules by diffusion
- Carrier proteins
- Move molecules by diffusion and active transport but the protein has to change shape to allow this
- Extrinsic protein
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