A convenient method for the post-modification of any peptide bearing a disulfide bond via rapid ligand-free copper-catalyzedazide–alkynecycloaddition (CuAAC) was developed. N-hydroxysuccinimide (NHS) esters and maleimides bearing an aryl acetylene residue to allow installation of a terminal alkyne moiety into peptides were efficiently synthesized. The ligation of glutathione (GSH) using the maleimides
Efficient consecutive 1,2,3-triazole formations using multiazide platforms are disclosed. On the basis of unique clickability of the 1-adamantyl azido group, a four-step synthesis of tetrakis(triazole)s was achieved from a tetraazide platform molecule. This method was applied to a convergentsynthesis of tetrafunctionalized probes in a modular synthetic manner.
New Supramolecular Au<sup>I</sup>–Cu<sup>I</sup>Complex as Potential Luminescent Label for Proteins
作者:D. V. Krupenya、P. A. Snegurov、E. V. Grachova、V. V. Gurzhiy、S. P. Tunik、A. S. Melnikov、P. Yu. Serdobintsev、E. G. Vlakh、E. S. Sinitsyna、T. B. Tennikova
DOI:10.1021/ic401569n
日期:2013.11.4
A novel supramolecular [Au6Cu2(C2C6H4-4-COONC4H4O2)(6)(Ph2PC6H4PPh2)(3)](PF6)(2) complex functionalized with a succinimide ester alkynyl substituent has been synthesized and characterized using X-ray crystallography, mass spectrometry, and NMR spectroscopy. Like the other complexes of this class, it demonstrates bright emission in acetone and dichloromethane solutions with the excited state lifetime in a microsecond domain. This complex readily reacts with a surface amine group of proteins/enzymes (human serum albumin (HSA), rabbit anti-HSA antibodies, soybean trypsin inhibitor, and alpha-chymotrypsin) to give covalent conjugates, which contain up to five molecules of the luminescent label bound to the biomolecule. The conjugates keep a high level of the phosphorescent label emission, but in contrast to the parent complex molecule, display excellent solubility and high stability in physiological media. Investigation of the biological activity of the conjugates also showed that the specific structure of the biomolecules remained nearly unchanged upon bonding with the label, which is indicative of a very prospective of the conjugates application in biomolecular detection.
LYSINE REACTIVE PROBES AND USES THEREOF
申请人:The Scripps Research Institute
公开号:US20210255193A1
公开(公告)日:2021-08-19
Disclosed herein are methods and compounds for profiling a lysine reactive protein. Also described herein are methods, compounds, and compositions for identifying a small molecule fragment ligand that interacts with a reactive lysine residue.