Description: This volume of Methods in Enzymology includes up-to-date procedures used for the assembly of nucleosomes, chromatin, and nuclei, extending the classical procedures described nearly ten years ago in Volume 170 (Nucleosomes) of this series, and should assist in the further investigation of the ways in which the structural dynamics of chromatin contribute to the regulation of transcription, replication, recombination, and repair Also described in this volume are assays for the structure and function of in vitro reconstituted chromatin and for defining the organization and characteristics of natural chromosomal material from yeast (Saccharomyces cerevisae), flies (Drosophila melanogaster), and frogs (Xenopus laevis), as well as from mammalian tissues. The purification and assay procedures for various chromatin remodeling activities, including histone acetyltransferases, histone deacetylases, and SWI/SNF ATPases are also detailed.

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