Joining mutants of RAG1 and RAG2 that demonstrate impaired interactions with the coding-end DNA |
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| Authors: | Nagawa Fumikiyo Hirose Satoshi Nishizumi Hirofumi Nishihara Tadashi Sakano Hitoshi |
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| Affiliation: | Department of Biophysics and Biochemistry, Graduate School of Science, and Core Research for Evolutional Science and Technology Program of the Japan Science and Technology Agency, The University of Tokyo, Bunkyo-ku, Tokyo 113-0032, Japan. |
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| Abstract: | In V(D)J joining of antigen receptor genes, two recombination signal sequences (RSSs), 12- and 23-RSSs, form a complex with the protein products of recombination activating genes, RAG1 and RAG2. DNaseI footprinting demonstrates that the interaction of RAG proteins with substrate RSS DNA is not just limited to the signal region but involves the coding sequence as well. Joining mutants of RAG1 and RAG2 demonstrate impaired interactions with the coding region in both pre- and postcleavage type complexes. A possible role of this RAG coding region interaction is discussed in the context of V(D)J recombination. |
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