4.1.3.1 Hydrophobic or Hydrophilic

4.1.3.1 Based on Hydrophobic or Hydrophilic nature

The amino acids in proteins may be classified into two broad groups on the basis of whether the R groups attached to the α- carbon atoms are polar (hydrophilic) or nonpolar (hydrophobic) .

Sl. No.

Hydrophobic

Sl. No.

Hydrophilic

Uncharged

1

Alanine

1

Asparagine

2

Isoleucine

2

Cysteine

3

Leucine

3

Glycine Nonpolar

4

Methionine

4

Glutamine

5

Phenylalanine

5

Serine

6

Proline(lminoacid)

6

Threonine

7

Tryptophan

7

Tyrosine

8

Valine

Charged-Acidic

1

Glutamic acid

2

Aspartic acid

Basic

1

Arginine

2

Histidine

3

Lysine

Last modified: Tuesday, 3 April 2012, 5:52 AM