A variably occupied CTCF binding site in the ultrabithorax gene in the Drosophila bithorax complex.


Although the majority of genomic binding sites for the insulator protein CCCTC-binding factor (CTCF) are constitutively occupied, a subset show variable occupancy. Such variable sites provide an opportunity to assess context-specific CTCF functions in gene regulation. Here, we have identified a variably occupied CTCF site in the Drosophila Ultrabithorax… (More)
DOI: 10.1128/MCB.01061-14


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