Now showing items 11-20 of 62
Age-associated structural alterations in senescent mouse brain DNA
(Elsevier, 1977-01-20)
The maintenance of structural integrity in the DNA of aging mice has been examined with the aim in view of determining whether changes in genome structure constitute the molecular basis of aging. Cell lysate DNA from brains ...
Amino acid transport systems in animal cells: Interrelations and energization
(Alan R. Liss, Inc.Wiley Periodiocals, Inc., 1977)
After summarizing the discrimination of the several transport systems of neutral amino acids in the cell of the higher animal, I discuss here the ways in which 2 dissimilar transport systems interact, so that one tends to ...
Leucine binding protein and regulation of transport in E. coli
(Alan R. Liss, Inc.Wiley Periodiocals, Inc., 1977)
Leucine is transported into E. coli cells by high-affinity transport systems (LIV-I and leucine-specific systems) which are sensitive to osmotic shock and require periplasmic binding proteins. In addition leucine is ...
The purification and properties of an aryl [beta]-hexosidase from bovine liver
(Elsevier, 1977-01-30)
An aryl [beta]-hexosidase was purified 800-fold from bovine liver. The purified enzyme hydrolyzed p-nitrophenyl glycosylpyranoside derivatives of [beta]--galactose, [beta]--glucose, [beta]--xylose, [beta]--mannose, and ...
Does the non-saturable cell entry apply to the charge-free form of amino acids?
(Elsevier, 1977-09-05)
The slow cellular entry shown by neutral [alpha]-amino acids at very high concentrations appears not to arise from diffusion of the totally uncharged species through the plasma membrane of the Ehrlich cell, judging from a ...
Electrochemical reduction of substituted pyrimidines in acetonitrile
(Elsevier, 1977-01-25)
Polarographic studies of several substituted pyrimidines were reinforced by the results from cyclic voltammetry, controlled-potential electrolysis, and spectrophotometric examination of electrolyzed solutions, as well as ...
Actinoid pnictides--I : Heat capacities from 5 to 950 K and magnetic transitions of U3As4 and U3Sb4. Ferromagnetic transitions
(Elsevier, 1977)
The heat capacities of triuranium tetraarsenide (U3As4) and triuranium tetraantimonide (U3Sb4), measured by adiabatic calorimetry over the temperature range 5-950 K, show sharp [lambda]-shaped transitions at 196.1 and 147.5 ...
Molecular mobilities of soluble components in the aqueous phase of chromaffin granules
(Elsevier, 1977-03-29)
NMR relaxation times have been used to characterize molecular motion and intermolecular complexes in the aqueous phase of bovine chromaffin granules. Partially relaxed 13C and proton spectra have been obtained at 3 and ...
Phase III crystal structure and 115 K phase transition of hexamethylbenzene
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1977-02)
High-resolution spectroscopic data—Raman, infrared, and electronic—have been employed for the study of low-temperature, phase III, hexamethylbenzene and its associated λ-type phase transition. Phase III is trigonal, with ...