University of Rochester

John R Frost

Rudi Fasan

Jessica M Smith

Francesca C Vitali

Methods and compositions are provided for covalently linking a chemical species to a recombinant or synthetic polypeptide. The methods involve the reaction of a thioester-comprising polypeptide with a reagent comprising a reactive amino-thiol group connected to the chemical species which is to be covalently linked to the polypeptide, via a linker. Such chemical species can be a functional group, a label or tag molecule, a biological molecule, a ligand, or a solid support. Efficient and catalyst-free methods for C-terminal protein labeling are also provided. The methods expand current capabilities in the area of protein functionalization, providing useful and complementary tools for the isolation, detection, characterization, and analysis of proteins in a variety of in vitro and in vivo applications.

Methods and compositions for site-specific labeling of peptides and proteins

Methods and compositions are provided that utilize synthetic molecules and genetically encoded polypeptides to generate macrocyclic peptide-containing molecules with a hybrid peptidic/non-peptidic backbone. Also provided are nucleic acid molecules, polypeptides, and methods for generating libraries of macrocyclic peptide-containing molecules with a hybrid peptidic/non-peptidic backbone. These methods can be used to increase the structural diversity of ligand libraries as well as facilitate the functional screening of these libraries to identify compound(s) with desired activity properties.

Growing community of inventors

Niagara Falls, NY, United States of America

John R Frost