Histone H1 deposition and histone-DNA interactions in replicating chromatin.
نویسندگان
چکیده
منابع مشابه
Histone Hi deposition and histone - DNA interactions in replicating chromatin ( chromatin replication / histone - DNA crosslinking /
An immunochemical method for analyzing protein interactions with BrdUrd-substituted DNA was used to study binding of histones to nascent DNA in nuclei. The results indicate that in Ehrlich ascites tumor (EAT) cells, histone Hi deposits on newly replicated DNA simultaneously with or immediately after core histone deposition so that in chromatin replicated for 3 min, the stoichiometry of the hist...
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Histone H1 binds to linker DNA between nucleosomes, but the dynamics and biological ramifications of this interaction remain poorly understood. We performed single-molecule experiments using magnetic tweezers to determine the effects of H1 on naked DNA in buffer or during chromatin assembly in Xenopus egg extracts. In buffer, nanomolar concentrations of H1 induce bending and looping of naked DN...
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Histone H1 gets Pin'd onto chromatin T he proline isomerase Pin1 limits chromosome decon-densation by stabilizing a histone's association with chromatin, Raghuram et al. reveal. Histone H1 incorporates into nucleosomes to enhance chromatin folding and condensation. Phosphory-lation by the cyclin-dependent kinase Cdk2 promotes H1's dissociation from chromatin, perhaps by altering the conformatio...
متن کاملBinding of phosphorylated histone H1 to DNA.
A chromatin associated protein kinase was used to add 3 moles of phosphate to seryl side chains of 1 mole of histone H1. The DNA binding properties of this in vitro phosphorylated H1 were compared with those of unmodified H1. Considerably more radioactive superhelical DNA was retained on nitrocellulose filters at 20mM-40mM NaCl by phosphorylated H1 than by unmodified H1. However, zone velocity ...
متن کاملDistribution of H1 histone in chromatin digested by micrococcal nuclease.
The relative amount of H1 histone associated with isolated nucleosomes from calf thymus was determined as a function of the extent of DNA digestion by micrococcal nuclease. Generally the amount of H1 histone associated with mononucleosomes decreases with increasing digestion until 60% of the original H1 remains associated with DNA 150 base pirs or less in size. Coincidentally, H1 histone increa...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1993
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.90.9.3918