1) Draw the chemical structure of a protein (peptide) 3 amino acids long. Substitute "R" for each side chain. Include every atom in your structure. Label on your diagram: the peptide bond, the amino end, and the carboxyl end. 2) Which of the following amino acids has a side chain that includes a potential hydrogen bond donor? a. Leu (L) b. Ser (S) c. Val (V) d. Gly (G) 3) When two RNA molecules anneal to each other, what new interactions or bonds are formed? a. Phosphodiester bonds b. Hydrogen bonds and hydrophobic interactions c. Peptide bonds d. Interactions between bases and amino acids
Added by Michael S.
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However, I can describe the structure. A protein (peptide) 3 amino acids long would have the following structure: - The amino end (N-terminus) would have a free amino group (-NH2). - Each amino acid would be connected to the next one by a peptide bond, which is a Show more…
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Interactions of amino acids on the interior of proteins are key to the shapes of proteins. In group (a), which pairs of amino acids form hydrophobic interactions? In group (b), which pairs form ionic interactions? Which pairs in group (c) form hydrogen bonds? (a) 1 Pro $\ldots$ Phe 2 Lys ... Ser 3 Thr ... Leu 4 Ala ... Gly (b) 1 Val $\ldots$ Leu 2 Glu $\ldots$. Lys 3 Met $\ldots$ Cys 4 Asp .... His (c) 1 Cys $\ldots$ Cys 2 Asp ... Ser 3 Val ... Gly 4 Met .... Cys
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