Abstract:
:The synthesis of histones and DNA was examined in BHK cells arrested in G1 by isoleucine starvation and in cells progressing into the S phase upon isoleucine refeeding. Approximately 2-3% of the cells were not arrested in G1 and synthesized DNA. The rate of synthesis of DNA and nucleosomal histones observed in cells starved for isoleucine could be accounted for by the presence of these asynchronous cells. Synthesis of H1 histones by cells in G1, however, was 3 times that of the nucleosomal histones and approximately 15% of the rate of H1 histone synthesis in mid-S. Upon entry into S, the histones were synthesized in the same molar ratio in which they are present in chromatin. The possible biological significance of H1 histone synthesis in G1 cells and its implications for the regulatory mechanisms controlling histome synthesis are discussed.
journal_name
Celljournal_title
Cellauthors
Tarnowka MA,Baglioni C,Basilico Cdoi
10.1016/0092-8674(78)90092-2subject
Has Abstractpub_date
1978-09-01 00:00:00pages
163-71issue
1eissn
0092-8674issn
1097-4172pii
0092-8674(78)90092-2journal_volume
15pub_type
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