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Sequence-specific DNA-binding proteins use diverse mechanisms to recognize their cognate DNA sites. In addition to direct sequence-specific DNA contacts made by DNA recognition domains, extrinsic factors such as ligand binding, homo- and hetero-dimeric protein associations, and association via other transcription factors can also modulate the DNA-recognition properties of DNA-binding domains. In each...
Specific changes in chromatin structure are associated with transcriptional regulation. These chromatin alterations include both covalent modifications of the amino termini of histones as well as ATP-dependent non-covalent remodeling of nucleosomes. Certain protein domains, such as the bromodomains, are commonly associated with both of these classes of enzymes that alter chromatin. This review discusses...
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