In vivo analysis of chromatin following nystatin-mediated import of active enzymes into Saccharomyces cerevisiae - PubMed (original) (raw)

In vivo analysis of chromatin following nystatin-mediated import of active enzymes into Saccharomyces cerevisiae

S Venditti et al. Mol Gen Genet. 1994 Jan.

Abstract

In vivo DNA-protein interactions are usually studied at the molecular level using DNA-degrading agents of low molecular weight. In order to be useful, macromolecular probes of chromatin structure, such as enzymes must first cross the cell membrane. In this paper we describe the introduction and evaluation of macromolecules with enzymatic activity into yeast spheroplasts treated with the polyene antibiotic nystatin. We report the low resolution analysis of chromatin structure in the promoter region of the Saccharomyces cerevisiae gene encoding DNA topoisomerase I by this technique using micrococcal nuclease and restriction enzymes.

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