The preparation of a novel phosphorus species, thiophosphoramidate, has enabled the specific thiophosphorylation of histidine at its 3-position. The rates of phosphorylation and thiophosphorylation of histidine are reported, as well as the spectroscopic properties of both thiophosphoramidate and 3-thiophosphohistidine. Structural assignment of the latter was made by analogy to the NMR properties of the known 3-phosphohistidine. The alkylation of 3-thiophosphohistidine by phenacyl bromide serves as a model for the introduction of labeling or probe reagents into histidine phosphorothioate-containing proteins.
[EN] PHOSPHOHISTIDINE AND PHOSPHOTYROSINE ANALOGUES<br/>[FR] ANALOGUES DE LA PHOSPHOHISTIDINE ET DE LA PHOSPHOTYROSINE
申请人:UNIV SHEFFIELD
公开号:WO2015033120A1
公开(公告)日:2015-03-12
The invention relates to phosphohistidine analogues. The invention also relates to antibodies that specifically bind to the analogues and methods of generating said antibodies. In one embodiment of the invention there is provided a phosphohistidine analogue of Formula V: (V) wherein W is selected from H, CO2H or CONH2; and X is selected from CH or N.
Tris- and ammonium carbonate based buffer solutions were employed, proving to serve as a non-destructive environment. Using potassium phosphoramidate or diammonium thiophosphoramidate, a series of phosphorylated and thiophosphorylated aminoacidderivatives was prepared, helping, together with computational (using density functional theory, DFT) estimation of 31P NMR chemicalshifts, to assign thiophosphorylated
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.
The invention relates to phosphohistidine analogues. The invention also relates to antibodies that specifically bind to the analogues and methods of generating said antibodies. In one embodiment of the invention there is provided a phosphohistidine analogue of Formula V: (V) wherein W is selected from H, CO
2
H or CONH
2
; and X is selected from CH or N.
Compositions and methods for analyzing histidine phosphorylation
申请人:SANOFI
公开号:EP2778176A1
公开(公告)日:2014-09-17
A peptide of the general structure:
is provided, wherein X is a non--hydrolyzable pHis analogue and R is H or CH3. Such peptides can be used to produce sequence-independent anti-phosphohistidine antibodies. Also provided is a composition comprising antibodies that specifically bind to said peptide when X is a phosphohistidine (or a non--hydrolyzable pHis analogue) but fail to specifically bind to said peptide when X is histidine.
一般结构的肽:
其中 X 是不可水解的 pHis 类似物,R 是 H 或 CH3。这种肽可用于生产序列无关的抗磷组氨酸抗体。此外,还提供了一种包含抗体的组合物,当 X 为磷酸组氨酸(或不可水解的 pHis 类似物)时,抗体与所述多肽特异性结合,但当 X 为组氨酸时,抗体不能与所述多肽特异性结合。