what does it mean proline has secondary amino group

1 answer

The statement "proline has a secondary amino group" is inaccurate. Proline is an amino acid with a unique structure compared to other standard amino acids. It is an imino acid, meaning it contains an additional ring (pyrrolidine) that connects with the alpha-amino group. This structure does not possess a secondary amino group but rather just a primary amino group, which is the case for all standard amino acids.