AID Phosphorylation Regulates Mismatch Repair–Dependent Class Switch Recombination and Affinity Maturation
نویسندگان
چکیده
منابع مشابه
Parp3 Negatively Regulates Immunoglobulin Class Switch Recombination
To generate highly specific and adapted immune responses, B cells diversify their antibody repertoire through mechanisms involving the generation of programmed DNA damage. Somatic hypermutation (SHM) and class switch recombination (CSR) are initiated by the recruitment of activation-induced cytidine deaminase (AID) to immunoglobulin loci and by the subsequent generation of DNA lesions, which ar...
متن کاملRegulation of class switch recombination and somatic mutation by AID phosphorylation
Activation-induced cytidine deaminase (AID) is a mutator enzyme that initiates somatic mutation and class switch recombination in B lymphocytes by introducing uracil:guanine mismatches into DNA. Repair pathways process these mismatches to produce point mutations in the Ig variable region or double-stranded DNA breaks in the switch region DNA. However, AID can also produce off-target DNA damage,...
متن کاملAID from bony fish catalyzes class switch recombination
Class switch recombination was the last of the lymphocyte-specific DNA modification reactions to appear in the evolution of the adaptive immune system. It is absent in cartilaginous and bony fish, and it is common to all tetrapods. Class switching is initiated by activation-induced cytidine deaminase (AID), an enzyme expressed in cartilaginous and bony fish that is also required for somatic hyp...
متن کاملThe histone methyltransferase MMSET regulates class switch recombination.
Wolf-Hirschhorn syndrome (WHS) is a genetic disease with characteristic facial features and developmental disorders. Of interest, loss of the MMSET gene (also known as WHSC1) is considered to be responsible for the core phenotypes of this disease. Patients with WHS also display Ab deficiency, although the underlying cause of this deficiency is unclear. Recent studies suggest that the histone me...
متن کاملThe cohesin complex regulates immunoglobulin class switch recombination
Immunoglobulin (Ig) class switch recombination (CSR) is initiated by the transcription-coupled recruitment of activation-induced cytidine deaminase (AID) to switch regions and by the subsequent generation of double-stranded DNA breaks (DSBs). These DNA breaks are ultimately resolved through the nonhomologous end joining (NHEJ) pathway. We show that during CSR, AID associates with subunits of co...
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ژورنال
عنوان ژورنال: The Journal of Immunology
سال: 2019
ISSN: 0022-1767,1550-6606
DOI: 10.4049/jimmunol.1900809