Activation-Induced Cytidine Deaminase Alters the Subcellular Localization of Tet Family Proteins

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Activation-Induced Cytidine Deaminase Alters the Subcellular Localization of Tet Family Proteins

Activation-induced cytidine deminase (Aid), a unique enzyme that deaminates cytosine in DNA, shuttles between the nucleus and the cytoplasm. A recent study proposed a novel function of Aid in active DNA demethylation via deamination of 5-hydroxymethylcytosine, which is converted from 5-methylcytosine by the Ten-eleven translocation (Tet) family of enzymes. In this study, we examined the effect ...

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Activation-induced cytidine deaminase (AID)

Activation-induced cytidine deaminase (AID) plays an essential role in the generation of a highly competent repertoire of antibodies by participating in class switch recombination (CSR) and somatic hypermutation (SHM). After B cell stimulation by antigens, AID initiates SHM and CSR by deamination of cytidine to uridine in the variable and constant regions of Ig genes. An adverse effect of AID’s...

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The double-edged sword of activation-induced cytidine deaminase.

Activation-induced cytidine deaminase (AID) is required for Ig class switch recombination, a process that introduces DNA double-strand breaks in B cells. We show in this study that AID associates with the DNA-dependent protein kinase catalytic subunit (DNA-PKcs) promoting cell survival, presumably by resolving DNA double-strand breaks. Wild-type cells expressing AID mutants that fail to associa...

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Involvement of activation-induced cytidine deaminase in skin cancer development.

Most skin cancers develop as the result of UV light-induced DNA damage; however, a substantial number of cases appear to occur independently of UV damage. A causal link between UV-independent skin cancers and chronic inflammation has been suspected, although the precise mechanism underlying this association is unclear. Here, we have proposed that activation-induced cytidine deaminase (AID, enco...

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Post-translational regulation of activation-induced cytidine deaminase.

The assembled immunoglobulin genes in the B cells of mice and humans are altered by distinct processes known as class switch recombination (CSR) and somatic hypermutation, leading to diversification of the antibody repertoire. These two DNA modification processes are initiated by the B cell-specific protein factor activation-induced cytidine deaminase (AID). AID is post-translationally modified...

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ژورنال

عنوان ژورنال: PLoS ONE

سال: 2012

ISSN: 1932-6203

DOI: 10.1371/journal.pone.0045031