Amino Acids

Structural formula for glycine, an amino acid.
Figure 4-11 Structural
formula for glycine, an
amino acid.

If a hydrogen atom that is attached to a carbon atom adjacent to a carboxyl group is replaced with −NH2, (an amino group), the compound becomes an amino acid, as shown in figure 4-11. While this could be called an amino acetic acid, its more common name is glycine. If propionic acid is converted to an amino acid, alanine results (figure 4-12).

Alanine results when propionic acid is converted to an amino acid.
Figure 4-12 Alanine results when propionic
acid is converted to an amino acid.

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