Generation of [La(peptide)]3+Complexes in the Gas Phase:  Determination of the Number of Binding Sites Provided by Dipeptide, Tripeptide, and Tetrapeptide Ligands

2007 ◽  
Vol 111 (45) ◽  
pp. 11562-11571 ◽  
Author(s):  
Tujin Shi ◽  
K. W. Michael Siu ◽  
Alan C. Hopkinson
Keyword(s):  
Gas Phase ◽  
Binding Sites ◽  
Phase Determination ◽  
Number Of Binding Sites

Infrared Spectroscopy of Gas-Phase Cr+Coordination Complexes:  Determination of Binding Sites and Electronic States

2005 ◽  
Vol 127 (19) ◽  
pp. 7243-7254 ◽  
Author(s):  
David T. Moore ◽  
Jos Oomens ◽  
John R. Eyler ◽  
Gert von Helden ◽  
Gerard Meijer ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Gas Phase ◽  
Binding Sites ◽  
Electronic States ◽  
Coordination Complexes

Fe3O4-based composite magnetic nanoparticles for volatile compound sorption in the gas phase: determination of selenium(iv)

The Analyst ◽  
2019 ◽  
Vol 144 (1) ◽  
pp. 152-156 ◽  
Author(s):  
Irina Timofeeva ◽  
Mariya Alikina ◽  
Anna Vlasova ◽  
Mikhail Osmolowsky ◽  
Mikhail Voznesenskiy ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Gas Phase ◽  
Volatile Compound ◽  
Hydride Generation ◽  
Phase Determination ◽  
On Line

On-line selenium separation based on hydride generation followed by sorption on magnetic nanoparticles.

scholarly journals Mechanism of ligand binding to α1-acid glycoprotein (orosomucoid): correlated thermodynamic factors and molecular parameters of polarity

1995 ◽  
Vol 306 (2) ◽  
pp. 545-549 ◽  
Author(s):  
S Urien ◽  
Y Giroud ◽  
R S Tsai ◽  
P A Carrupt ◽  
F Brée ◽  
...  
Keyword(s):  
Binding Sites ◽  
Partition Coefficients ◽  
Water Systems ◽  
Hydrogen Bond Donor ◽  
Acid Glycoprotein ◽  
Number Of Binding Sites ◽  
Modelling Techniques ◽  
Polar Interactions ◽  
Polarity Parameters

Eight ligands were used in this study, four basic, three neutral and one acidic. Their binding to serum alpha 1-acid glycoprotein (orosomucoid) was measured at several temperatures, and the data were analysed together by a general model with three unknowns, number of binding sites, delta H0 and delta S0. The partition coefficients of the ligands were measured in octanol/water and heptane/water systems (log Poct. and log Phep.), and their molecular volumes were calculated by molecular modelling techniques. These structural properties allow determination of polarity parameters (delta log Poct.-hep., lambda oct. and lambda hep.) which encode in different proportions the various polar interactions between the solute and the aqueous and organic phases, i.e. hydrogen-bonding capacity and dipolarity/polarizability. This study shows that good correlations exist between delta H0 or delta S0 and polarity parameters, such that the enthalpic contribution to binding increases with increasing polarity of the ligands, mainly hydrogen-bond-donor acidity, whereas their entropic contribution to binding decreases.

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