Stable triazolylphosphonate analogues of phosphohistidine
摘要:
Histidine-phosphorylated proteins and the corresponding kinases are important components of bacterial and eukaryotic cell-signalling pathways, and are therefore potential drug targets. The study of these biomolecules has been hampered by the lability of the phosphoramidate functional group in the phosphohistidines and the lack of generic antibodies. Herein, the design and concise synthesis of stable triazolylphosphonate analogues of N1- and N3-phosphohistidine, and derivatives suitable for bioconjugation, are described.
作者:Jung-Min Kee、Bryeanna Villani、Laura R. Carpenter、Tom W. Muir
DOI:10.1021/ja104393t
日期:2010.10.20
and Tyr residues, our understanding of histidine phosphorylation is relatively limited, particularly in higher eukaryotes, due to technical difficulties stemming from the intrinsic instability and isomerism of phosphohistidine (pHis). We report the design and synthesis of stable and nonisomerizable pHis analogues. These pHis analogues were successfully utilized in solid-phase peptidesynthesis and semi-synthesis
The present invention relates to the phosphohistidine analogs of the present invention which of the formula (I) and the hapten containing the residue of same. It also relates to the hapten conjugated to a carrier molecule and the isolated antibodies raised against the immunogens, said antibodies recognizing polypeptide containing a phosphorylated histidine or the phosphotriazole residue but it does not recognize an amino acid or polypeptide that is not phosphorylated or a polypeptide which is phosphorylated on amino acids other than histidine but not on histidine.