Summary
This article covers research work in this laboratory on the structure and function of chromatin. Early studies have led to discovery of skeletal fibrills (nucleonemas) within the nuclei and showed the specific role of histone H1 in chromatin condensation and in restriction of transcription. More recently with the aid of a novel DNP electrophoresis technique the relation of histone HI and non-histone proteins to nucleosomes was studied. Three types of mononucleosomes and a number of subnucleosomes were identified in chromatin digests. The complexes of certain HMG proteins with short DNA segments were isolated and found to originate from transcriptionally active chromatin. Different forms of SV40 minichromosome were characterized. A method for the analysis of nucleosome distribution along the DNA sequence was elaborated and used to show non-random (phased) location of nucleosomes on SV40 DNA. The attachment of DNA to skeletal elements of interphase nuclei and metaphase chromosomes was shown to be a non-random, probably sequence-specific process.
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Georgiev, G.P., Bakayev, V.V., Nedospasov, S.A. et al. Studies on structure and function of chromatin. Mol Cell Biochem 40, 29–48 (1981). https://doi.org/10.1007/BF00230186
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DOI: https://doi.org/10.1007/BF00230186