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The outside surface of a membrane protein
Hydrophobic, nonpolar side chains (hydrocarbons H and C)
The outside surface of a DNA-binding protein
Hydrophilic, polar w/charge (try to bond to DNA via hydrogen bonding)
The inside of a water-soluble protein
Hydrophobic, nonpolar (C&H) - the INSIDE of the protein is not soluble so it AVOIDS water
The “pore” part of a protein that allows ions to travel through it
Hydrophilic, polar w/partial charges