RAG2, a component of the V(D)J recombinase, has a plant homeodomain (PHD) domain which specifically recognizes histone H3 trimethylated at lysine 4 (H3K4me3). A crystal structure of the complex is presented, and the interaction between RAG2 and H3K4me3 shown to be important for V(D)J recombination in vivo.
- Adam G. W. Matthews
- Alex J. Kuo
- Marjorie A. Oettinger