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Identify the intermolecular/intramolecular interactions that are possible for the side chains of the following amino acids:...

Identify the intermolecular/intramolecular interactions that are possible for the side chains of the following amino acids: serine, phenylalanine, glycine, lysine, aspartic acid, and aspartate.

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Answer #1

1)Serine

Intermolecular interactions-

-peptide bond(covalent bond ) between alpha amino group of one amino acid to alpha carboxyl group of another amino acid.

-polar OH group can involve in H-bonding with other amino acid

2) Phenyl alanine

Intermolecular interactions- peptide bond

3)glycine- Intermolecular interactions- peptide bond

4)lysine

Intermolecular interactions- peptide bond

Basic –NH2 group interact with acidic H in the vicinity and gets protonated –NH3+ group formed

-NH- group is a good Hydrogen bond donor, branching due to H-bonding

5)aspartic acid and aspartate

Intermolecular interactions- peptide bond

Acidic –COOH group interact with basic groups in the vicinity and gets deprotonated –COO- group

Branching due to –C=O or carbonyl group forming H-bonding

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