Sulfation of the Human Cytomegalovirus Protein UL22A Enhances Binding to the Chemokine RANTES
作者:Xiaoyi Wang、Julie Sanchez、Martin J. Stone、Richard J. Payne
DOI:10.1002/anie.201703059
日期:2017.7.10
UL22A is an 83 aminoacid chemokine‐binding protein produced by human cytomegalovirus that likely assists the virus in dampening the host antiviral response. We proposed that UL22A is sulfated on two tyrosineresidues and tested this hypothesis through the chemical synthesis of a small library of differentially sulfated protein variants. The (sulfo)proteins were efficiently prepared using a novel β‐selenoleucine
Synthesis and Utility of β-Selenophenylalanine and β-Selenoleucine in Diselenide–Selenoester Ligation
作者:Xiaoyi Wang、Leo Corcilius、Bhavesh Premdjee、Richard J. Payne
DOI:10.1021/acs.joc.9b02665
日期:2020.2.7
The synthesis of suitably protected beta-selenophenylalanine and beta-selenoleucine amino acids was accomplished from Garner's aldehyde as a common starting point. These selenoamino acids were incorporated into model peptides and shown to facilitate rapid diselenide-selenoester ligation (DSL) with peptide selenoesters which, when coupled with in situ deselenization, afforded native peptide products. The utility of one-pot DSL-deselenization chemistry at phenylalanine and leucine was demonstrated through the rapid synthesis of a glycosylated interferon-gamma fragment and the chemokine-binding protein UL22A, respectively.
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