Essential Amino Acids

Lysine

- Essential Amino Acid - 4 Carbon atoms (butyl chain) - pH is protonated - Positive Charge - Attracts negative ions: glutamine, aspartate, Cl- - Lys - K

Leucine

- Essential Amino Acid - Nonpolar - Isobutyl side chain - Leu - L

Threonine

- Essential Amino Acid - Polar - Same serine but has an extra methyl group - Has a carbon instead of hydrogen - Alcohol functional group makes it polar - Thr - T

Tryptophan

- Essential Amino acid - Nonpolar - Aromatic amine to a heterocycle - Indole - Causes tiredness - Trp - W

Methionine

- Essential Amino acid - Nonpolar - Sulfide side chain - Met - M

Phenylalanine

- Essential amino acid - Nonpolar - Benzene Ring attached to CH2 - Phe - F

Valine

- Essential amino acid - Nonpolar - Has an isopropyl side chain - Val - V

Isoleucine

- Essential amino acid - it has a sec-butyl group - Nonpolar - Ile - I