Native Chemical Ligation (NCL) is an important extension of the chemical ligation concept for constructing a larger polypeptide chain by the covalent condensation of two or more unprotected peptides segments.[1] Native chemical ligation is the most effective method for synthesizing native or modified proteins of typical size (i.e., proteins< ~300 AA).[2]
^Agouridas V, El Mahdi O, Diemer V, Cargoët M, Monbaliu JM, Melnyk O (June 2019). "Native Chemical Ligation and Extended Methods: Mechanisms, Catalysis, Scope, and Limitations". Chemical Reviews. 119 (12): 7328–7443. doi:10.1021/acs.chemrev.8b00712. PMID31050890. S2CID145023266.