Patterns of histone variant synthesis can distinguish G0 from G1 cells
- PMID: 7159927
- DOI: 10.1016/0092-8674(82)90130-1
Patterns of histone variant synthesis can distinguish G0 from G1 cells
Abstract
Quiescent Chinese hamster ovary cells, as well as three other types of quiescent cells, synthesize histone at a reduced but significant rate. The variant patterns of the histone synthesis in quiescent, S-phase and G1-phase and G2-phase cells ali differed from each other. H3.3 was the only H3 variant synthesized in quiescent and in G1 and G2 cells. All four H2A variants were synthesized in quiescent and S-phase cells, but only H2A.X and H2A.Z were synthesized in G1 and G2 cells. No part of G1 or the G1-S transition could be found with an H2A synthesis pattern like that in quiescent cells. These findings suggest that the quiescent state is not part of G1, but that it is a separate and discrete state.
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