Immunoglobulin gene conversion in chicken DT40 cells largely proceeds through an abasic site intermediate generated by excision of the uracil produced by AID‐mediated deoxycytidine deamination

Abstract excerpt

Diversification of the primary antibody repertoire in chickens is achieved by a gene conversion process that uses a set of immunoglobulin variable (IgV) pseudogenes as templates. Studies usingthe chicken DT40 B lymphoma cell line have shown that this gene conversion is dependent on activation-induced deaminase, which deaminates deoxycytidine to deoxyuridine in the IgV gene. The mechanism by which the resultant...

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