The amino acid serine NH CH CH OH COOH has the following pk

Last updated: 7/4/2023

The amino acid serine NH CH CH OH COOH has the following pk values pka1 2 19 pka1 9 21 What is are the major species at pH 2 19 Note in this context major species refers only to the species present in the highest concentration NH3CH CH OH COOH and NH CH CH OH COOH O NH3CH CH OH COOH only O NH CH CH OH COOH only O NH3CH CH OH COOH and NH3CH CH OH COO