Journal
MOLECULAR CELL
Volume 10, Issue 5, Pages 1247-1253Publisher
CELL PRESS
DOI: 10.1016/S1097-2765(02)00742-6
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APOBEC1 is the catalytic component of an RNA editing complex but shows homology to activation-induced cytidine deaminase (AID), a protein whose function is to potentiate diversification of immunoglobulin gene DNA. Here, we show that APOBEC1 and its homologs APOBEC3C and APOBEC3G exhibit potent DNA mutator activity in an E. coli assay. Indeed, like AID, these proteins appear to trigger DNA mutation through dC deamination. However, each protein exhibits a distinct local target sequence specificity. The results reveal the existence of a family of potential active dC/dG mutators, with possible implications for cancer.
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