Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Nabil El Tayar"'
Autor:
Nabil El Tayar
Publikováno v:
Molecular and Cellular Endocrinology. 125:65-70
The extracellular domain (ECD) of gonadotropin receptors belong to the leucine-rich repeat (LRR) protein superfamily and their transmembrane domain (TMD) is characteristic of the seven α-helices G-protein-coupled receptors (GPCR). The availability o
Autor:
Buckler David Rogers, Wayne A. Hendrickson, Arnaud Ythier, Michel Dreano, Hao Wu, Nabil El Tayar, Xuliang Jiang, Cheng Shirley Vui Yen
Publikováno v:
Structure. 3:1341-1353
Background: Glycoprotein hormones influence the development and function of the ovary, testis and thyroid by binding to specific high-affinity receptors. The extracellular domains of these receptors are members of the leucine-rich repeat (LRR) protei
Autor:
Pedro Andrade, Yvan Giroud, Bernard Testa, Pierre-Alain Carrupt, Françoise Brée, Nabil El Tayar, Jean-Paul Tillement, Ruey-Shiuan Tsai
Publikováno v:
Helvetica Chimica Acta. 76:842-854
Using the five therapeutic oxicams 1-5, we showed that isosteric replacements result in remarkable changes in the physicochemical and structural properties of congeners. Thus. the acidity of the phenolic OH group is relatively higher in the oxicams c
Publikováno v:
International Journal of Pharmaceutics, Vol. 80, No 1 (1992) pp. 39-49
The lipophilicity (expressed by log P(oct)) and H-bond donor acidity (expressed by DELTA-log P(oct-hep)) of the dopaminergic agonist piribedil in different ionization states were investigated in order to assess its capacity for crossing membranes. Th
Publikováno v:
Journal of Physical Chemistry, Vol. 96, No 3 (1992) pp. 1455-1459
Lipophilicity (expressed as log P, the logarithm of partition coefficients) is known to be decomposable into a cavity/volume term V expressing mainly hydrophobic and dispersive solute-solvent interactions, and polar terms reflecting electrostatic sol
Publikováno v:
Perkin Transactions 2, No 1 (1992) pp. 79-84
The distribution coefficients of free alpha-amino acids have been measured around their isoelectric value by centrifugal partition chromatography (CPC), allowing the determination of the partition coefficient (log P) of the amino acids in their zwitt
Autor:
Thomas Högberg, Pierre-Alain Carrupt, Ruey-Shiuan Tsai, Tomas de Paulis, Bernard Testa, Nabil El Tayar
Publikováno v:
Helvetica Chimica Acta. 74:956-968
Raclopride, an antipsychotic 6-methoxysalicylamide ( = 2-hydroxy-6-methoxybenzamide) derivative, was shown by titrimetry and UV-photometry to exist in zwitterionic form at physiological pH. Calculations revealed that the neutral and zwitterionic form
Autor:
Albert J. Leo, Bernard Testa, Pierre-Alain Carrupt, Corwin Hansch, Ruey-Shiuan Tsai, Nabil El Tayar
Publikováno v:
Journal of Pharmaceutical Sciences, Vol. 80, No 8 (1991) pp. 744-749
Human skin permeation data taken from the literature were analyzed for quantitative relationships with physicochemical properties and structural descriptors. No correlations exist with molecular weights and solvent-accessible surface areas. In most c
Publikováno v:
Helvetica Chimica Acta, Vol. 74, No 2 (1991) pp. 290-296
A number of isomers and analogs of the neurotoxin 1-methyl-4-phenylpyridinium (MPP+) were examined for their lipophilic behavior. Their partition coefficients in the 1-octanol/H-2O system were measured by centrifugal partition chromatography (CPC), w
Publikováno v:
J. Chem. Soc., Perkin Trans. 2. :1797-1802
The lipophilicity of zwitterionic amino acids was determined by measuring their distribution coefficients in an octan-1-ol–buffer system at pH values near their isoelectric point (log DI) using centrifugal partition chromatography (CPC). The observ