Regulating infidelity: RNA-mediated recruitment of AID to DNA during class switch recombination.

European Journal of Immunology
Lauren J DiMenna, Jayanta Chaudhuri

Abstract

The mechanism by which the DNA deaminase activation-induced cytidine deaminase (AID) is specifically recruited to repetitive switch region DNA during class switch recombination is still poorly understood. Work over the past decade has revealed a strong link between transcription and RNA polymerase-associated factors in AID recruitment, yet none of these processes satisfactorily explain how AID specificity is affected. Here, we review a recent finding wherein AID is guided to switch regions not by a protein factor but by an RNA moiety, and especially one associated with a noncoding RNA that has been long thought of as being inert. This work explains the long-standing requirement of splicing of noncoding transcripts during class switching, and has implications in both B cell-mediated immunity as well as the underlying pathological syndromes associated with the recombination reaction.

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Citations

Nov 28, 2021·International Journal of Molecular Sciences·Rebecca LinkeKatrin Paeschke

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