Proteins and Enzymes

ID #2184

Does a polypeptide chain require hydrogen bonding in its final conformation? Is a subunit interaction in a multi-subunit protein likely to use hydrogen bonding? Why do hydrocarbons on adjacent fatty acid tails NOT use hydrogen bonding? Is it because they are nonpolar?

I can't imagine a situation in which a folded polypeptide chain would not have hydrogen bonding. Remember, alpha helices and beta pleated sheets are a result of hydrogen bonding. 

Quaternary structure can be the result of all of the same types of bonding that occur in tertiary structure. That includes (but is not limited to) hydrogen bonding. 

Yes you are correct about hydrocarbons. They do not have the requisite electronegativity required to form hydrogen bonds. 

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