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Summary The rate of turnover of individual P-compounds, related to the metabolic cycle of some phosphatides, was followedin vivo in the brain of rats a few days old after32P administration. The phosphorylcholine is the precursor of the cytidinediphosphatecholine; this in turn may be the precursor of lecithin. Thel--glyceryl-phosphorylcholine represents the degredation product of lecithin. The specific activity curves of the phosphorylethanolamine and phosphorylse rine are similar to that of the phosphorylcholine; likewise thel--glycerylphos-phorylethanolamine is similar to the activity curve of thel--glycerylphosphorylcholine. 相似文献
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Miani N. Michetti F. de Renzis G. Caniglia A. 《Cellular and molecular life sciences : CMLS》1973,29(12):1499-1501
Riassunto Una proteina specifica del sistema nervoso, chiamata S-100, stimola la RNA polimerase nucleolare in nuclei isolati da encefalo immaturo di pollo (11 giorni di incubazione). La proteina non ha alcum effetto sulla RNA polimerase nucleoplasmica del medesimo sistema sperimentale. La stimolazione della S-100 sulla RNA polimerase nucleolare è -amanitina resistente ed è parzialmente antagonizzata dalla actinomicina. Ulteriori ricerche potranno chiarire il ruolo della proteina S-100 sulla espressione genetica del sistema nervoso. 相似文献
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N. Miani 《Cellular and molecular life sciences : CMLS》1958,14(1):34-35
Summary A method is described whereby the phosphoryl-choline,-ethanolamine, -serine, thel--glycerylphosphoryl-choline,-ethanolamine, the phosphatidyl-choline,-ethanolamine, -serine and also the cytidinediphosphatecholine may be separated in the brain of a rat a few days old (340–610 mg). 相似文献
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