Now showing items 21-30 of 51
Studies on the spin-spin interaction between flavin and iron-sulfur cluster in an iron-sulfur flavoprotein
(Elsevier, 1986-01-17)
When the di- or trimethylamine dehydrogenases (trimethylamine:(acceptor) oxidoreductase (demethylating), EC 1.5.99.7) of certain methylotrophic bacteria are reduced by two electrons with substrate unusual EPR signals arise ...
Additions of allylboronates to sulfenimides
(Elsevier, 1986)
The addition of allyllioronates to sulfenimines gives homoallylsulfenamides which are potentially versatile Intermediates for alkaloid synthesis.
Atomic Physicochemical Parameters for Three-Dimensional Structure-Directed Quantitative Structure-Activity Relationships I. Partition Coefficients as a Measure of Hydrophobicity
(John Wiley & Sons, Inc., 1986-08)
Earlier we showed (A. K. Ghose and G. M. Crippen, J. Med. Chem. , 28, 333, 1985) the necessity of atomic physicochemical parameters in three-dimensional receptor mapping. Here we derive more refined and widely applicable ...
Time-dependent WKB expansions for a class of propagators
(Elsevier, 1986-01-03)
A time-dependent variant of the WKB method is developed for propagators which do not have the simple Feynman structure K=fexp(iS/h) withf=f(t). The method is applied to radial propagators for N-dimensional isotropic ...
Radiative properties of an electrically-vaporized thin film plasma in an external magnetic field
(Elsevier, 1986)
An external magnetic field of a few kilogauss is used to alter significantly the radiative properties of the plasmas generated by the capacitive discharge vaporization ofthin Ag films. The magnetic field is generated by ...
The chloride requirement for photosynthetic oxygen evolution: Factors affecting nucleophilic displacement of chloride from the oxygen-evolving complex
(Elsevier, 1986-04-02)
Previous research (Sandusky, P.O. and Yocum, C.F. (1983) FEBS Lett. 162, 339-343 and (1984) Biochim. Biophys. Acta 766, 603-611) has documented a competition between chloride and ammonia or Tris for a binding site within ...
1,1'-trimethylenebisthymine as synthetic model of dinucleotide TpT Electrochemical reduction
(Elsevier, 1986-04-25)
The electrochemical reduction of 1,1'-trimethylenebisthymine (Thy(C3)Thy) in dimethylsulfoxide was investigated using dc polarography, cyclic voltammetry, controlled potential electrolysis and spectroelectrochemistry. ...
Dicyanoimidazole complexes of Cu(I): a carbonyl assisted alcoholysis of nitrile
(Elsevier, 1986-08-01)
We describe a series of compounds which result from the reaction of Cu(I) with 4,5-dicyanoimidazole. This ligand is far more acidic than imidazole and in all cases forms complexes as the anion. The presence of carbon ...
Large-scale purification of [alpha]2-adrenergic receptor-enriched membranes from human platelets. Persistent association of guanine nucleotides with nonpurified membranes
(Elsevier, 1986-01-16)
A simple large-scale purification of [alpha]2-adrenergic receptor-enriched membranes from human platelets is described. Binding of the antagonist [3H]yohimbine is enriched 3-5-fold compared to a crude membrane fraction. ...
Heat capacity and other thermodynamic properties of CoTe 2 from 5 to 1 030 K and of CoTe 2.315 from 300 to 1 040 K
(Springer-Verlag, 1986-11)
The heat capacity of orthorhombic (marcasite-type structure) cobalt ditelluride has been measured from 5 to 1 030 K by adiabatic-shield calorimetry with alternate energy inputs and equilibrations. Above 900 K a marked ...