河南师范大学：《生物化学》课程PPT教学课件（英文版）Section B Amino acids and protein

The two enantiomers D-Alanine L-Alanine c○oH COOH Mirror CH3 CH3 NH2 NH H

The two enantiomers

TThe 20 standard amino acids >Hydrophobic aliphatic amino acids >Hydrophobic aromatic amino acids >Polar charged amino acids >Polar uncharged amino acids

The 20 standard amino acids ➢Hydrophobic aliphatic amino acids ➢Hydrophobic aromatic amino acids ➢Polar charged amino acids ➢Polar uncharged amino acids

Hydrophobic aliphatic amino acids H2N—C—coOH H glycine Gy:甘氨酸

Hydrophobic aliphatic amino acids Gly :甘氨酸 H H2N COOH H C glycine

Hydrophobic aliphatic amino acids CH3 HN一C—coOH alanine Aa:丙氨酸

Hydrophobic aliphatic amino acids Ala:丙氨酸 CH3 H2N COOH H C alanine

Hydrophobic aliphatic amino acids H3CC二CH3 HaN COOH valine va:缬氨酸

Hydrophobic aliphatic amino acids Val:缬氨酸 H H3C C CH3 H2N C COOH H valine