Which three of the following statements about amino acids are true? A chart of amino acid structures can be found here. Proline has an overall charge at physiological pH (7.4). The Ala side chain does not form hydrogen bonds with other amino acids. Isoleucine has more than one stereocenter (chiral center). The form of glycine used by the human body is D-glycine. Methionine is a thiol. Gln and Ser are polar amino acids.
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Proline has an overall charge at physiological pH (7.4): Proline is a nonpolar amino acid with a secondary amine in its side chain. At physiological pH, the amino group is protonated and has a positive charge, while the carboxyl group is deprotonated and has a Show more…
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Which four statements about amino acids are true? The form of glycine used by the human body is D-glycine. Threonine has more than one stereocenter (chiral center). Phe can undergo oxidation to form Tyr. The Val side chain does not form hydrogen bonds with other amino acids. Alanine has an overall charge at physiological pH (7.4). Ser and Gln are polar amino acids. Methionine is a thiol.
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