Binding of s-triazines to dissolved humic substances: Electrophoretic approaches using Affinity Capillary Electrophoresis (ACE) and Micellar Electrokinetic Chromatography (MEKC)
摘要:
Binding studies were conducted between s-triazines and soil and water extracted fulvic and humic acids (FA and HA) using capillary electrophoretic methods,A first approach to estimate simultaneously the affinity of several s-triazines (hydroxyatrazine, ameline, atraton and ametryn) to dissolved humic substances (HS) was done with the affinity capillary electrophoresis (ACE) modus; the limits of the ACE method resulted in the measurement of the electrophoretic mobility of the pesticide-HS complexes. In a second approach, the partition of the s-triazines between the water and the dissolved humic substances was successfully described like in micellar electrokinetic chromatography (MEKC) using the humic substances as micellar phase, Similar to surfactants, humic acids (HA) behaved like ionic micelles in the aqueous running buffer at concentrations higher than a defined ''humic critical micellar concentration'' (HCMC). The low molecular weight acidic fulvic acids (FA) behaved the same but showing higher HCMC.These results confirm the micellar properties of HS and the hydrophobic type of interaction of the s-triazines with hydrophobic sites of humic and fulvic ionic micelles. (C) 1997 Elsevier Science Ltd.
Targeting the hydrophobic region of Hsp90’s ATP binding pocket with novel 1,3,5-triazines
摘要:
Heat shock protein 90 (Hsp90) is a molecular chaperone that plays an important role in regulating the maturation and stabilization of many oncogenic proteins. In an attempt to discover a new class of Hsp90 inhibitors, a series of 1,3,5-triazine compounds were rationally designed, synthesized, and their biological activities were evaluated. Compound 3b was found to degrade Hsp90's client proteins of Her2, Met and Akt and to induce the expression level of Hsp70. The binding mode of 3b in the ATP-binding site of Hsp90 was predicted by the molecular docking. (C) 2013 Elsevier Ltd. All rights reserved.
Design, Synthesis, and Characterization of Ogerin-Based Positive Allosteric Modulators for G Protein-Coupled Receptor 68 (GPR68)
作者:Xufen Yu、Xi-Ping Huang、Terry P. Kenakin、Samuel T. Slocum、Xin Chen、Michael L. Martini、Jing Liu、Jian Jin
DOI:10.1021/acs.jmedchem.9b00869
日期:2019.8.22
protein-coupled receptor 68 (GPR68) is an understudied orphan G protein-coupled receptor (GPCR). It is expressed most abundantly in the brain, potentially playing important roles in learning and memory. Pharmacological studies with GPR68 have been hindered by lack of chemical tools that can selectively modulate its activity. We previously reported the first small-molecule positive allosteric modulator (PAM)
Cyanuric Chloride Derivatives. I. Aminochloro-s-triazines
作者:Jack T. Thurston、James R. Dudley、Donald W. Kaiser、Ingenuin Hechenbleikner、Frederic C. Schaefer、Dagfrid Holm-Hansen
DOI:10.1021/ja01151a001
日期:1951.7
DE433100
申请人:——
公开号:——
公开(公告)日:——
Targeting the hydrophobic region of Hsp90’s ATP binding pocket with novel 1,3,5-triazines
作者:Taeho Lee、Young Ho Seo
DOI:10.1016/j.bmcl.2013.09.050
日期:2013.12
Heat shock protein 90 (Hsp90) is a molecular chaperone that plays an important role in regulating the maturation and stabilization of many oncogenic proteins. In an attempt to discover a new class of Hsp90 inhibitors, a series of 1,3,5-triazine compounds were rationally designed, synthesized, and their biological activities were evaluated. Compound 3b was found to degrade Hsp90's client proteins of Her2, Met and Akt and to induce the expression level of Hsp70. The binding mode of 3b in the ATP-binding site of Hsp90 was predicted by the molecular docking. (C) 2013 Elsevier Ltd. All rights reserved.