Now showing items 171-180 of 233
Some properties of nucleic acids extracted with phenol
(Elsevier, 1965-02-08)
Preparations of nucleic acids obtained by extraction of mouse liver, HeLa cells and cell fractions with phenol and deoxycholate have been characterized with regard to the differential solubility of ribonucleic acid and ...
Enzymic reactions in mammalian metabolism of [gamma]-hydroxyglutamic acid
(Elsevier, 1961-08-05)
Characteristic infrared frequencies of rotational isomers of alkyl chlorides
(Elsevier, 1962)
A study of the infrared spectra of primary, secondary and tertiary alkyl chlorides reveals that the frequency of the so-called C-Cl stretching mode is a function of the detailed structure in the vicinity of the C-Cl bond. ...
Purification of rat-liver [gamma]-hydroxyglutamate transminase and its probable identity with glutamate-aspartate transminase
(Elsevier, 1964-03-09)
1. 1. An enzyme which catalyzes the transamination of [gamma]-hydroxyglutamate has been purified over 300-fold from rat-liver homogenates.2. 2. The following observations strongly suggest that [gamma]-hydroxyglutamate ...
Studies on phosphodeoxyribomutase
(Elsevier, 1961-09-02)
A phosphodeoxyribomutase has been demonstrated in cell-free extracts of Sarcina lutea. The enzyme could be heated to 55[deg] for at least 2 h and still retain activity. It had a pH optimum around 7.2, and the most highly ...
Glutamine synthetase V. Dependence of its sulfhydryl requirement on organic ligands and metal ions
(Elsevier, 1964-07-08)
A partially purified preparation of glutamine synthetase (-glutamate: ammonia ligase (ADP), EC 6.3.1.2) has been obtained from rat liver. The enzyme preparation showed no activity in the absence of Mg2+; Mn2+ could not ...
Isolation and separation of inositol phosphates from hydrolysates of rat tissues
(Elsevier, 1965-06-01)
1. 1.An electrophoretic method for the rapid separation of the phosphate esters of inositol is presented.2. 2.It is used, together with ion-exchange chromatography, to establish the presence of inositol di- and triphosphates ...
A comparison of some physical properties of polyethylene–styrene graft copolymers prepared by the trapped free radical method and polyethylene–polystyrene blends
(Interscience Publishers, Inc.Wiley Periodiocals, Inc., 1960-04)
The preparation and properties of polyethylene–styrene graft copolymers using trapped free radicals produced by gamma rays has been reported. When polystyrene branches are attached to the polyethylene chain there is ...