Rapid, Stable, Chemoselective Labeling of Thiols with Julia-Kocieński-like Reagents: A Serum-Stable Alternative to Maleimide-Based Protein Conjugation
作者:Narihiro Toda、Shigehiro Asano、Carlos F. Barbas
DOI:10.1002/anie.201306241
日期:2013.11.25
Exquisite chemoselectivity for cysteine has been found for methylsulfonylphenyloxadiazole compounds under various buffer conditions. Furthermore, the resulting protein conjugates have superior stability to cysteine–maleimide conjugates in human plasma (HSA=human serum albumin, MBP‐C‐HA=maltose‐binding protein). This new thiol‐click reaction offers a new approach to generate stable protein conjugates
[EN] NOVEL THIOL & AMINO MODIFYING REAGENTS FOR PROTEIN CHEMISTRY AND METHODS OF USE THEREOF<br/>[FR] NOUVEAUX RÉACTIFS DE MODIFICATION DE GROUPEMENTS THIOL ET AMINE DESTINÉS À UNE CHIMIE DE PROTÉINES ET LEURS PROCÉDÉS D'UTILISATION
申请人:SCRIPPS RESEARCH INST
公开号:WO2014144878A2
公开(公告)日:2014-09-18
Provided herein are aryl and heteroaryl sulfone and sulfoxide modifying agents for facile and selective chemical alteration of proteins at thiol in cysteine residues, thiol- and selenol-containing moieties. Also provided herein are TAK242 derivatives for selective reaction with amino-containing compounds. The modifying agents disclosed herein can be used under mild reaction conditions for a variety of conjugation applications in molecules that possess amino, thiol or selenol functionalities. Also provided herein are methods of chemoselectively modifying a moiety containing the amino acids cysteine or lysine. Provided herein are CCR5 and CXCR antagonist derivatives modified for bioconjugation to macromolecules.
A Reagent for Amine‐Directed Conjugation to IgG1 Antibodies
作者:Anders Märcher、Johan Palmfeldt、Marija Nisavic、Kurt V. Gothelf
DOI:10.1002/anie.202013911
日期:2021.3.15
methodologies are often required to improve the labeling of antibodies in terms of selectivity and scalability. Herein, we report the development of an easily available chemical reagent that allows site‐directedlabeling of native human IgG1 antibodies in good yield and mono‐labelingselectivity. The salicylaldehyde moiety of the reagent reacts with surface exposed lysine residues to transiently form an iminium