By P.J. Hilton, M. Pfenniger

ISBN-10: 3540129103

ISBN-13: 9783540129103

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Multiprotein complexes perform these two activities by using the energy derived from ATP hydrolysis to induce changes in the histone octamer–DNA interaction. First we examine how nucleosome remodeling factors are able to remodel chromatin and how this process functions in controlling gene expression. 1 CHROMATIN REMODELING Chromatin remodeling transiently exposes DNA to binding proteins Chromatin remodeling involves ATP-dependent nucleosome remodeling factors, whose global function is to modulate the access of transcription factors to chromosomal DNA.

2012) Independence of repressive histone marks and chromatin compaction during senescent heterochromatic layer formation. 010). Dorigo B, Schalch T, Bystricky K & Richmond TJ (2003) Chromatin fiber folding: requirement for the histone H4 N-terminal tail. 1016/S0022-2836(03)00025-1). Dutnall RN & Ramakrishnan V (1997) Twists and turns of the nucleosome: tails without ends. Structure 5:1255–1259. Francis NJ (2009) Mechanisms of epigenetic inheritance: copying of polycomb repressed chromatin. Cell Cycle 8:3513–3518.

Chromatin fibers are further organized into euchromatin and heterochromatin Whatever the mechanism that packages DNA into the nucleus, it is one that must be able to generate different types of chromatin compaction in distinct regions of the chromosome, because variations in chromosome packaging also differentiate regions of transcriptional activity from regions that are transcriptionally silent. As cells leave mitosis in the cell cycle, large regions of each chromosome become decondensed and disperse in the nuclei of each daughter cell.

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Nilpotente Gruppen und nilpotente Raume by P.J. Hilton, M. Pfenniger


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