Photo-induced conjugation of tetrazoles to modified and native proteins.

Autor: Siti W; Centre for Biomimetic Sensor Science, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Drive 637553, Singapore. MNallani@ntu.edu.sg., Khan AK, de Hoog HP, Liedberg B, Nallani M
Jazyk: angličtina
Zdroj: Organic & biomolecular chemistry [Org Biomol Chem] 2015 Mar 21; Vol. 13 (11), pp. 3202-6.
DOI: 10.1039/c4ob02025a
Abstrakt: Bio-orthogonal chemistry has been widely used for conjugation of polymer molecules to proteins. Here, we demonstrate the conjugation of polyethylene glycol (PEG) to bovine beta-lactoglobulin (BLG) by photo-induced cyclo-addition of tetrazole-appended PEG and allyl-modified BLG. During the course of the investigation, a significant side-reaction was found to occur for the conjugation of PEG-tetrazole to native BLG. Further exploration of the underlying chemistry reveals that the presence of a tryptophan residue is sufficient for conjugation of tetrazole-modified molecules.
Databáze: MEDLINE