Mutational comparison of the single-domained APOBEC3C and double-domained APOBEC3F/G anti-retroviral cytidine deaminases provides insight into their DNA target site specificities

Abstract excerpt

Human APOBEC3F and APOBEC3G are double-domained deaminases that can catalyze dC-->dU deamination in HIV-1 and MLV retroviral DNA replication intermediates, targeting T-C or C-C dinucleotides, respectively. HIV-1 antagonizes their action through its vif gene product, which has been shown (at least in the case of APOBEC3G) to interact with the N-terminal domain of the deaminase, triggering its degradation. Here, we...

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