The RAG proteins cleave at V(D)J recombination signal sequences then form a postcleavage complex with the broken ends. The role of this complex in end processing and joining, if any, is undefined. We have identified two RAG1 mutants proficient for DNA cleavage but severely defective for coding and signal joint formation, providing direct evidence that RAG1 is critical for joining in vivo and strongly suggesting that the postcleavage complex is important in end joining. We have also identified a RAG1 mutant that is severely defective for both hairpin opening in vitro and coding joint formation in vivo. These data suggest that the hairpin opening activity of the RAG proteins plays an important physiological role in V(D)J recombination.
This research output has an Altmetric Attention Score of 3. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 20 October 2009.
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#30
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