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ECB-ART-33105
Biochem J 1969 Mar 01;1121:81-9. doi: 10.1042/bj1120081.
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Further studies on phosphorylation and the thiol-disulphide ratio of histones in growth and development.

Ord MG , Stocken LA .


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1. The proportion of thiol groups in the total thiol+disulphide of histone extracts from fertilized eggs from Echinus and Psammechinus was increased during periods of structural alterations in the nucleus. 2. The probable start of DNA synthesis in the fertilized eggs coincided with periods of maximum thiol content. 3. Histone extracts from rat liver and regenerating liver were predominantly in the thiol form and no significant variations could be detected during the first 30hr. after partial hepatectomy. 4. An assay system was developed to follow the phosphorylation believed to be associated with the arginine-rich histone F3. Phosphorylation increased by 50% at 1 and 2hr. after partial hepatectomy. The phosphate content also increased during the period of DNA synthesis. 5. The increased phosphorylation found 1hr. after partial hepatectomy was not prevented by actinomycin or prior irradiation. 6. The phosphate content of histone F1 was very high in livers from foetal rats and declined in neonatal rats similarly to the decline in DNA synthesis.

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References [+] :
ALLFREY, ACETYLATION AND METHYLATION OF HISTONES AND THEIR POSSIBLE ROLE IN THE REGULATION OF RNA SYNTHESIS. 1964, Pubmed