Staudinger-Phosphonite Reactions for the Chemoselective Transformation of Azido-Containing Peptides and Proteins
摘要:
Site-specific functionalization of proteins by bloorthogonal modification offers a convenient pathway to create, modify, and study biologically active biopolymers. In this paper the Staudinger reaction of aryl-phosphonites for the chemoselective functionalization of azido-peptides and proteins was probed. Different water-soluble phosphonites with ollgoethylene substituents were synthesized and reacted with unprotected azido-containing peptides in aqueous systems at room temperature in high conversions. Finally, the Staudinger-phosphonite reaction was successfully applied to the site-specific modification of the protein calmodulin.
Chemoselective Bioconjugation of Triazole Phosphonites in Aqueous Media
作者:M. Robert J. Vallée、Paul Majkut、Dagmar Krause、Michael Gerrits、Christian P. R. Hackenberger
DOI:10.1002/chem.201404690
日期:2015.1.12
versatile phosphonite building blocks with improved stability against hydrolysis were used for the efficient metal‐free functionalization of peptides and proteins in aqueous buffers at low micromolar concentrations. The application of this protocol to the immobilization of a Rasa1‐SH2 domain revealed high binding affinity to the human T‐cell protein ADAP and supports the applicability of triazole phosphonites