glycine (G)

Glycine polarity Reset
(Side chain polarity of the other 19 amino acids is expressed relative to the "side-chainless", glycine.)
Highlight the hydrogen that is substituted by R-groups in the other 19 L-amino acids. (With the carboxyl group facing you, L-amino acids have their R-group on the left. Substitution at the other position on the a-carbon would result in a D-amino acid.)
Add a distance measure (in Å units).

Some facts on glycine.

1. Abbreviation: Gly.
2. One-letter code: G.
3. Molecular mass: 75 daltons.
4. Side chain (or R-group) features:
   • Structural formula:
     
   • Formula: -H;
   • pK_a: none.