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Deaminase Activity on Single-stranded DNA (ssDNA) Occurs in Vitro when APOBEC3G Cytidine Deaminase Forms Homotetramers and Higher-order Complexes

8 Jul 2011

Abstract excerpt

APOBEC3G (A3G) is a cytidine deaminase that catalyzes deamination of deoxycytidine (dC) on single-stranded DNA (ssDNA). The oligomeric state of A3G required to support deaminase activity remains unknown. We show under defined in vitro conditions that full-length and native A3G formed complexes with ssDNA in an A3G concentration-dependent but temperature-independent manner. Complexes assembled and maintained at 4...

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PMID: 21737457
DOI: 10.1074/jbc.m111.269506

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