L-serine (S)

Side chain polarity Reset
Display the primary alcohol group as Ball & Stick.
Ser differs structurally from Cys only in the oxygen for sulfur substitution.

Some facts on L-serine.

1. Abbreviation: Ser.
2. One-letter code: S.
3. Molecular mass: 105 daltons.
4. Side chain (or R-group) features:
   • Structural formula:
     
   • Formula: -CH₂-OH;
   • Category: polar; neutral.
   • pK_a: none.