Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Krahl, A."'
Publikováno v:
The Journal of General Physiology
1. Glucose-6-phosphate and 6-phosphogluconate dehydrogenases have been found in homogenates of Arbacia eggs; 95 per cent of the activity toward each substrate is recovered in the supernatant fraction after centrifuging at 20,000 g for 30 minutes. 2.
Publikováno v:
The Journal of General Physiology
1. Methods suitable for the determination of diphosphothiamine (cocarboxylase) in eggs of Arbacia punctulata have been developed. Quantitative extraction of the cocarboxylase was effected by combining the use of thiamine hydrochloride in the extracti
Autor:
G. H. A. Clowes, M. E. Krahl
Publikováno v:
The Journal of General Physiology
The effects of 4,6-dinitro-o-cresol and 2,4,5-trichlorophenol on the respiration and cell division of fertilized eggs of Arbacia punctulata have been determined in the presence of each of a number of respiratory inhibitors. The experimental results o
Autor:
Bernhard J. Jandorf, M. E. Krahl
Publikováno v:
The Journal of General Physiology
1. The diphosphopyridine nucleotide content of Arbacia eggs has been measured manometrically and found to be approximately 250–500 micrograms per gm. wet weight of eggs, the value varying with individual egg samples and with the state of developmen
Publikováno v:
The Journal of General Physiology
1. An enzyme capable of oxidizing reduced cytochrome c (i.e. a cytochrome oxidase) has been obtained from Arbacia eggs. In 0.02 M hydroquinone, the cytochrome oxidase was half activated at a cytochrome c concentration of approximately 4 x 10–6 M. T
Autor:
M. E. Krahl, G. H. A. Clowes
Publikováno v:
Experimental Biology and Medicine. 34:567-569
Nitro and dinitrophenols have been shown to stimulate the metabolic processes of many types of cells1, 2 and to produce a reversible block to the cell division of fertilized eggs of a number of marine invertebrates. The analogous dihalo and trihaloph
Publikováno v:
Experimental Biology and Medicine. 45:719-721
ConclusionsThese experiments appear to indicate that Arbacia eggs contain a flavin-dinucleotide similar to, or identical with, that found in other tissues.1,4
Metabolic activities and cleavage of eggs of the sea urchin, arbacia punctulata; a review, 1932-1949
Autor:
M. E. Krahl
Publikováno v:
The Biological bulletin. 98(3)
1. This review deals with the general question of relation of metabolic activities to cleavage in the Arbacia egg. According to current biochemical concepts the answer to this question would be found in complete information about the following subjec
Publikováno v:
The Journal of General Physiology
1. The hexokinase activity of homogenates of eggs and embryos of the sea urchin Arbacia punctulata has been measured. Expressed as micrograms glucose consumed at 20°C., per hour per milligram of protein the following values were obtained: unfertiliz
Publikováno v:
The Journal of General Physiology
1. The C14O2 production by Arbacia eggs and embryos from glucose-1-C14, glucose-2-C14, and glucose-6-C14 has been measured without and with dinitrocresol in the incubation medium. In the absence of the dinitrocresol, the C14O2 production from glucose