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5 Cards in this Set
- Front
- Back
The unique cyclic structure of which of the following amino acids plays a central role in the formation of alpha helices and beta sheets? |
Proline |
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Electrophoretic separation of leucine from a protein sample would be least effective at which of the following pH values?
|
7.4 |
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Electrophoretic separation at pH 6 of a sample of polypeptide 1 (mw 100) polypeptide 2 (mw 200) and polypeptide 3 (mw 400) would result in which of the following (note: the isoelectric point of each polypeptide occurs at pH 6)
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None of the polypeptides would move |
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The alpha helix is an example of which of the following structural properties of proteins? |
Secondary structure |
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All hydrophobic amino acids (valine, leucine, isoleucine, etc.) share which of the following properties? |
Nonpolar uncharged R groups |