Now showing items 21-30 of 61
Electron diffraction study of gaseous tetrahydrofuran
(Elsevier, 1969)
The gas phase molecular structure of tetrahydrofuran has been reinvestigated. Experimental diffraction intensities are well accounted for by a freely pseudo-rotating molecule. The mean value of the pseudo-rotational puckering ...
Metabolism of dehydroepiandrosterone and dehydroepiandrosterone sulfate in tissue extracts of rabbit ovaries
(Elsevier, 1969-02)
The simultaneous incubation of 3H-dehydroepiandrosterone sulfate and 14C-dehydroepiandrosterone by soluble and microsomal extracts of rabbit ovaries was investigated. 3H-dehydroepiandrosterone sulfate was converted to ...
Purification of a phospholipase C froM Bacillus cereus
(Elsevier, 1969-12-17)
Phospholipase C activity present in the growth medium of Bacillus cereus was purified 20-fold by chromatography on polyethyleneimine-cellulose columns, or by treatment with protamine sulfate and subsequent chromatography ...
Low-angle X-ray diffraction patterns from a variety of myelinated nerves
(Elsevier, 1969-04-15)
Low-angle X-ray diffraction patterns from a variety of myelinated nerves are described. Different kinds of patterns are obtained from peripheral nerve and central nervous system myelin. The intensity variation between the ...
Hydrostatic pressure effects on rabbit and echinoderm myosin ATPase
(Elsevier, 1969-06)
When saturated with ATP, sea cucumber myosin hydrolyzes ATP about 15 times more slowly than rabbit myosin, as expected from the slower contraction time of the muscle. The Arrhenius plots coincide at low temperatures, but ...
Heat capacity and vapor pressure of crystalline bis(benzene)chromium. Third-law entropy comparison and thermodynamic evidence concerning the structure of bis(benzene)chromium
(Elsevier, 1969-05)
Heat capacity measurements from 5 to 350[deg] K and vapor pressure measurements on bis(benzene)chromium together with the published frequency assignments permit a correlation between the third-law and spectroscopic entropies. ...
Enzymatic synthesis of carbonic anhydrases by human reticulocytes
(Elsevier, 1969-11-19)
Human reticulocyte-rich blood incubated 4h at 37[deg] in O2-CO2 (95:5, v/v) with 3H- or 14C-tagged amino acids revealed incorporation of the label into carbonic anhydrase I and II, Hb A, and in one patient, into Hb S. No ...
Nuclear phosphoproteins : II. Metabolism of exogenous phosphoprotein by intact nuclei
(Elsevier, 1969-02-04)
When 32P-labeled phosphoprotein is added to a suspension of calf thymus nuclei, the protein enters the nuclei and a rapid metabolic `turnover' of the previously incorporated phosphate groups occurs. The ony 32P-labeled ...
Testicular steroid sulfatase: Substrate specificity and inhibition
(Elsevier, 1969-12)
Kinetic studies of the cleavage of dehydroepiandrosterone-sulfate (1) and androstenediol-3-sulfate by a particulate enzyme preparation from a rat testicular microsomal fraction gave Km values of 2.04 x 10-6M for DHA-S ...