Some nuts are tougher to crack than others.
In this issue of Immunity, Oestreich et al. (2006) show that, during V(D)J recombination, RSSs may have distinct accessibility requirements. Some rely on an enhancer-intrinsic, general chromatin opening function, whereas others require enhancer-promoter interactions that direct local chromatin remodeling.
Krangel, MS; Carabana, J; Abarrategui, I
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