Now showing items 21-30 of 426
Thermodynamics of alkali alkanoates IX. Heat capacity and thermodynamic functions of lithium 2-methylpropanoate at temperatures from 7 K to 535 K
(Elsevier, 1993-10)
The heat capacity of lithium 2-methylpropanoate was measured by equilibrium adiabatic calorimetry at temperatures, T from 7 K up to 350 K and by d.s.c. from 330 K through melting to 535 K. A small diffuse hump was observed ...
Carboxylmethylation affects the proteolysis of myelin basic protein by Staphylococcus aureus V8 proteinase
(Elsevier, 1991-10-25)
Bovine myelin basic protein (MBP), charge isoform 1 (C1) was carboxylmethylated by the enzyme -aspartyl/-isoaspartyl protein methyltransferase (EC. 2.1.1.77) and the carboxylmethylated protein was subjected to proteolysis ...
Vibrational studies of the disulfide group in proteins. Part V. Correlation of SS stretch frequencies with the CCSS dihedral angle in known protein disulfide bridges
(Wiley Subscription Services, Inc., A Wiley Company, 1992-04)
Normal mode calculations have been done on 92 disulfide bridges in 25 known protein structures in order to correlate the SS stretch frequency with the CCSS dihedral angle. It is possible to classify the frequencies into ...
Selective multiple methylene insertion reactions mediated by iodomethylzine iodide: Mechanistic considerations and synthetic applications
(Elsevier, 1991-04-15)
The reaction of alkynylcoppers 1 with an excess of iodomethylzinc iodide selectively furnishes the quadruple methylene insertion copper organometallics 2 in fair to good yields. The mechanism of the reaction has been ...
Polyhedral liquid crystal silsesquioxanes
(John Wiley & Sons, Ltd., 1999-04)
Synthetic routes towards monodisperse polyhedral liquid-crystalline silsesquioxanes are described. The liquid-crystalline phase behaviour of these structurally uniform materials, with various silsesquioxane core and mesogenic ...
Fluorescence Yield Near Edge Spectroscopy (FYNES) of benzene adsorbed in Na-Y zeolite
(Baltzer Science Publishers, Baarn/Kluwer Academic Publishers; J.C. Baltzer AG, Scientific Publishing Company ; Springer Science+Business Media, 1990-01)
Benzene adsorbed in sodium-Y zeolite has been investigated using Fluorescence Yield Near Edge Spectroscopy (FYNES). These studies demonstrate that FYNES measurements are feasible as a direct probe of the local electronic ...
Structural organization of the bovine gene for the heart/muscle isoform of cytochrome c oxidase subunit VIa
(Elsevier, 1993-07-18)
The bovine gene for the nuclear-encoded heart/muscle isoform of cytochrome c oxidase subunit VIa (COX6A1) was isolated from a library of bovine genomic DNA in lambda EMBL3 and sequenced. The gene spans 760 bp and comprises ...
An intramolecular, Schmidt reaction of an alkyl azide with a carbocation. The generation and rearrangement of a conformationally restricted secondary aminodiazonium ion.
(Elsevier, 1992-09-08)
Treatment of azidoalkene 2 with triflic acid produced the bridged bicyclic enamine 3 by an intramolecular Schmidt reaction. Rearrangement of the intermediate aminodiazonium ion 5 is completely regioselective.