Explain each of the following observations. (a) The optical rotations of alanine are different in water, 1
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Explain each of the following observations.
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(a) The optical rotations of alanine are different in water, 1 M HCl, and 1 M NaOH. (b) Two mono-N-acetyl derivatives of lysine are known. (c) The peptide Gly-Ala-Arg-Ala-Glu is readily hydro- lyzed by trypsin in water at pH = 8, but it is inert to trypsin in 8 M urea at the same pH. (d) After peptides containing cysteine are treated with HSCH₂CH₂OH, then with aziridine, they can be cleaved by trypsin at their (modified) cysteine residues. NH H₂C-CH₂ aziridine
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a b c d Alanine like the other amino acids is a different compound in HCI NaOH and neutral HO because its ionization state is different and different ...View the full answer
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