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
为了寻找保持活性的蛋白质硫代磷酸化方法,以胸苷酸合酶重组蛋白为底物,在基于Tris和碳酸铵的缓冲溶液中使用了硫代磷酸氨基钾钾和硫代磷酸氨基二铵盐,事实证明可以用作无损环境。使用氨基磷酸钾或硫代磷酸氨基二铵制备了一系列磷酸化和硫代磷酸化的氨基酸衍生物,并与31 P NMR化学位移的计算(使用密度泛函理论,DFT)估计一起,帮助确定了硫代磷酸化蛋白的NMR共振并证明了其存在。硫代磷酸化的赖氨酸,丝氨酸和组氨酸部分。对31个预测有用的方法还介绍了硫代磷酸化的氨基酸部分和通常的硫代磷酸酯的1 H NMR化学位移。从胰蛋白酶消化酶获得的初步结果显示,峰位于m / z 1825.805,与TVQQQVHLNQDEYK的单硫代磷酸酯的模拟同位素模式分布完全吻合,其中硫代磷酸酯部分连接至组氨酸(His 26)或赖氨酸(Lys 33)侧。链。
PHOSPHOHISTIDINE ANALOGS
申请人:Muir Tom W.
公开号:US20130260398A1
公开(公告)日:2013-10-03
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。