蛋白激酶是大多数哺乳动物信号转导网络的关键组成部分,是治疗相关的药物靶点。研究蛋白激酶功能的努力将受益于能够分析复杂蛋白质组中激酶的新技术。在这里,我们描述了用于分析全细胞提取物和活细胞中激酶的活性定点探针。这些探针包含稳定蛋白激酶 ATP 结合位点的特定非活性构象的通用配体,以及允许共价修饰和富集激酶的三氟甲基苯基二氮丙啶和炔部分,分别。一组不同的丝氨酸/苏氨酸和酪氨酸激酶被鉴定为全细胞提取物中这些探针的特定靶标。此外,在活细胞中选择性标记了许多激酶靶标。
The present invention relates to compounds of Formula (I)
and their pharmaceutically acceptable salts, wherein the substituents are as described herein, and their use in medicine, in particular as Trk antagonists.
Two photoaffinity-labeling probes for retinoic acid receptor (RAR) α, 4-[(3-(3-(trifluoromethyl)-3H-diazirin-3-yl)phenyl)carboxamido]benzoic acid (3DIAM) and its para-isomer (4DIAM), were designed and synthesized. Both compounds possess high affinity for recombinant RARα (MBP-RARα/E) and bind covalently to its cognate ligand-binding site. The labeled site of MBP-RARα/E with 3DIAM was determined, by the endoproteinase combination method, to be located in helix 11 of the ligand-binding domain of RARα, which is the position at which the ligand is considered to bind, on the basis of the reported crystal structure of the retinoic acid/RARγ complex.
Characterizing the Epothilone Binding Site on β-Tubulin by Photoaffinity Labeling: Identification of β-Tubulin Peptides TARGSQQY and TSRGSQQY as Targets of an Epothilone Photoprobe for Polymerized Tubulin
作者:Adwait R. Ranade、LeeAnn Higgins、Todd W. Markowski、Nicole Glaser、Dmitry Kashin、Ruoli Bai、Kwon Ho Hong、Ernest Hamel、Gerhard Höfle、Gunda I. Georg
DOI:10.1021/acs.jmedchem.6b00188
日期:2016.4.14
predicted a binding pose and conformation of the photoprobe that are very similar to the ones reported for 1) the high resolution cocrystal structure of epothilone A with an α,β-tubulin complex and for 2) a saturation transfer difference NMR and transferred NOESY NMR study of dimeric and polymerized tubulin. Our findings thus provide additional support for these models as physiologically the most relevant
(EN) A receptor in substantially pure form obtainable from rat forebrain tissue which is characterised in that: a) compound A binds to it with a Kd of 40nM for rat forebrain tissue, b) compound A binds to it with a Bmax of 220 pmol/g protein for rat forebrain tissue, c) compound B binds to it with a Kd of 2nM for rat forebrain tissue, d) compound B binds to it with a Bmax of 220pmol/g protein for rat forebrain tissue; and homologous receptors from other sources sharing at least 85 % homology with the rat forebrain tissue.(FR) On décrit un récepteur, sous forme pratiquement pure, que l'on peut obtenir à partir du tissu du cerveau antérieur du rat, et qui est caractérisé en ce que: a) le composé A se fixe sur ce récepteur avec une constante de dissociation (Kd) de 40nM pour le tissu du cerveau antérieur du rat, b) le composé A se fixe sur le récepteur avec une densité (Bmax) de 220 pmol/g de protéine pour le tissu du cerveau antérieur du rat, c) le composé B se fixe sur lui avec une constante de dissociation (Kd) de 2nM pour le tissu du cerveau antérieur du rat, d) le composé B se fixe sur lui avec une densité (Bmax) de 220 pmol/g de protéine pour le tissu du cerveau antérieur du rat; on décrit également des récepteurs homologues provenant d'autres sources et présentant au moins 85 % d'homologie avec le tissu du cerveau antérieur du rat.
The present invention relates to compounds of Formula (I)
and their pharmaceutically acceptable salts, wherein the substituents are as described herein, and their use in medicine, in particular as Trk antagonists.