ATP-dependent chromatin remodeling enzymes, such as SWI/SNF, hydrolyze thousands of ATPs to regulate gene expression on chromatin fibers. Recent mechanistic studies suggest that these enzymes generate localized changes in DNA topology that drive formation of multiple, remodeled nucleosomal states.
Program in Molecular Medicine, University of Massachusetts Medical School, 373 Plantation Street, Worcester, MA 01605, USA. craig.peterson@umassmed.edu