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AMB Express

Table 2 Structure and pI values of the investigated amino acids

From: Quantification of amino acids and peptides in an ionic liquid based aqueous two-phase system by LC–MS analysis

Amino acid

Structure

One-letter code

Three-letter code

pI

Hydrophobicity of the side chain

Glutamic acid

E

Glu

3.24a

− 3.5c

Glycine

G

Gly

5.97a

− 0.4c

Histidine

H

His

7.59a

− 3.2c

Leucine

L

Leu

5.98a

3.8c

Phenylalanine

F

Phe

5.48b

2.8c

Serine

S

Ser

5.68a

− 0.8c

  1. a Taken from Hardy (1985)
  2. b Taken from Jakubke and Jeschkeit (1982)
  3. c Taken from Kyte and Dolittle (1982)
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