Match the amino acid (AA) with its correct side chain category: 1) proline A) acidic AA 2) histidine B) nonpolar AA 3) alanine C) basic AA 4) threonine D) polar AA 5) tryptophan 6) aspartic acid

Amino acids contain an amine group, a carboxyl group and a side chain (called the R group or functional group). The side chain is what gives an amino acid its unique characteristics.

1) proline - nonpolar AA

2) histidine - polar AA

3) alanine - nonpolar AA

4) threonine - polar AA

5) tryptophan - nonpolar AA

6) aspartic acid - acidic AA

The properties of an amino acid are dependent on their side chain.

Explanation:

1) Proline have non-polar side chain at physiological pH.

2) Histidine have basic side chain.

3) Alanini have non polar/hydrophobic side chain.

4) Threonine have polar/hydrophilic side chain.

5) Tryptophan have non-polar side chain.

6) Aspartic have acidic side chain.