The present study revealed that Apobec3A represents a novel restriction factor for HAdV infection, which is dependent on its deaminase activity. In contrast to expectations, Apobec3A expression levels were found to be strongly increased by HAdV infection. To counteract Apobec3A restrictive functions, HAdV evolution led to TC dinucleotide depletion. Furthermore, HAdV infection was found to modulate Apobec3A PTMs which is assumed to play a crucial role for Apobec3A dimer formation. The upregulation of Apobec3A expression, SUMOylation and dimer formation during HAdV infection indicates a novel antiviral mechanism of the host cell.
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The present study revealed that Apobec3A represents a novel restriction factor for HAdV infection, which is dependent on its deaminase activity. In contrast to expectations, Apobec3A expression levels were found to be strongly increased by HAdV infection. To counteract Apobec3A restrictive functions, HAdV evolution led to TC dinucleotide depletion. Furthermore, HAdV infection was found to modulate Apobec3A PTMs which is assumed to play a crucial role for Apobec3A dimer formation. The upregulatio...
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