title: Convenient and Efficient Synthesis of a Lanthanide-Coordinated, Diethylene Triamine Pentaacetic Acid Labeled Biopolymer as an Assay for the Cholecystokinin B Receptor.
abstract: To develop an assay for the cholecystokinin B receptor with an Eu(3+)-labeled cholecystokinin peptide via a diethylene triamine pentaacetic acid chelating linker, a commercial dianhydride diethylene triamine pentaacetic acid precursor was directly attached to the N-terminus of cholecystokinin peptides by a solid-phase synthesis method with a satisfactory yield and purity after reverse-phase high-performance liquid chromatography separation. Lanthanide was then coordinated to the peptide via a diethylene triamine pentaacetic acid bifunctional agent. This method is a useful approach to the large-scale synthesis of lanthanide(3+)-coordinated, diethylene triamine pentaacetic acid labeled biopolymers. This research provides not only a simple and convenient method for the preparation of lanthanide-based peptide ligand libraries but also possible lanthanide-based high-throughput screening of peptide receptors with a timeresolved fluorescence assay system. Five biopolymers were synthesized and characterized with high-resolution electrospray ionization in this study.
authors: College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, China 400044.
authors: F
authors: F
authors: Gao
authors: H
authors: H
authors: Handl
authors: J
authors: J
authors: Vagner
authors: V
authors: V
authors: Hruby
authors: R
authors: R
authors: Gillies