as substrates to evaluate the photocatalyst-proximity dependences of candidates for tyrosinelabelling reagents. The 1-methyl-4-aryl-urazole (MAUra) structure was found to be a novel tyrosyl radical trapping agent to labeltyrosineresidues effectively under the conditions where the ruthenium photocatalyst and tyrosine were in close proximity. Using a ruthenium photocatalyst conjugated to a carbonic
Protecting group free radical C–H trifluoromethylation of peptides
作者:Naoko Ichiishi、John P. Caldwell、Melissa Lin、Wendy Zhong、Xiaohong Zhu、Eric Streckfuss、Hai-Young Kim、Craig A. Parish、Shane W. Krska
DOI:10.1039/c8sc00368h
日期:——
approaches have been developed to effect the trifluoromethylation of aryl C–H bonds in native peptides either using stoichiometric oxidant or visible light photoredox catalysis. The reported methods are able to derivatize tyrosine and tryptophan sidechains under biocompatible conditions, and a number of examples are reported involving fully unprotected peptides with up to 51 amino acids. The development
Facile and Stabile Linkages through Tyrosine: Bioconjugation Strategies with the Tyrosine-Click Reaction
作者:Hitoshi Ban、Masanobu Nagano、Julia Gavrilyuk、Wataru Hakamata、Tsubasa Inokuma、Carlos F. Barbas
DOI:10.1021/bc300665t
日期:2013.4.17
The scope, chemoselectivity, and utility of the click-like tyrosine labeling reaction with 4-phenyl-3H-1,2,4-triazoline-3,5(4H)-diones (PTADs) is reported. To study the utility and chemoselectivity of PTAD derivatives in peptide and protein chemistry, we synthesized PTAD derivatives possessing azide, alkyne, and ketone groups and studied their reactions with amino acid derivatives and peptides of increasing
Specific labeling of tyrosine in proteins: Horseradish‐peroxidase‐catalyzed (HRP‐catalyzed) tyrosine modification was achieved with the aid of N‐methylluminol derivatives. Tyrosine residues in peptides and proteins were modified efficiently in the presence of H2O2 or β‐nicotinamide adenine dinucleotide.
蛋白质中酪氨酸的特异性标记:借助于N-甲基鲁米诺衍生物,实现了辣根过氧化物酶催化(HRP催化)酪氨酸修饰。在H 2 O 2或β-烟酰胺腺嘌呤二核苷酸的存在下,肽和蛋白质中的酪氨酸残基被有效修饰。
Tyrosine Bioconjugation through Aqueous Ene-Like Reactions
申请人:Barbas, III Carlos F.
公开号:US20120289682A1
公开(公告)日:2012-11-15
A new and versatile class of cyclic diazodicarboxamides that reacts efficiently and selectively with phenols and the phenolic side chain of tyrosine through an Ene-like reaction is reported. This mild aqueous tyrosine ligation reaction works over a broad pH range and expands the repertoire of aqueous chemistries available for small molecule, peptide, and protein modification. The tyrosine ligation reactions are shown to be compatible with the labeling of native enzymes and antibodies in buffered aqueous solution. This reaction provides a novel synthetic approach to bispecific antibodies. This reaction will find broad utility in peptide and protein chemistry and in the chemistry of phenol-containing compounds.