Activation-induced cytidine deaminase: The missing piece of many puzzles.

Carvalho, Thiago; Fagarasan, Sidonia; Muramatsu, Masamichi · Cell · 2025

review · Level V

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Abstract

Twenty-five years ago, two Cell papers reported the key missing functional piece in three molecular puzzles. The genetic swapping of immunoglobulin constant regions, the mutational fine-tuning of antibody specificity, and a baffling human immunodeficiency were traced to the action of one enzyme: activation-induced cytidine deaminase (AID).

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