AssayIndex
Peptide chemistry

Lactam bridge

A cyclisation through an amide bond between a side-chain carboxyl and a side-chain amine. Melanotan II and bremelanotide are lactam-cyclised.

Related terms

Macrolactamisation
The cyclisation step forming a lactam bridge. Incomplete cyclisation leaves the linear precursor at +18.011 Da — the commonest process failure in the melanocortin class.
see also Lactam bridge

Where this term appears

The glossary exists to make record pages readable without a chemistry degree. Every technical term on a report resolves here.