Abstract:Winged helix (wH) domains, also termed winged helix-turn-helix (wHTH) domains, are widespread in all kingdoms of life, and have diverse roles. In the context of DNA binding and DNA modification sensing, some eukaryotic wH domains are known as sensors of non-methylated CpG. In contrast, the prokaryotic wH domains in DpnI and phi.HhiV4I act as sensors of adenine methylation in 6mApT (6mA = N6mA) context. DNA binding modes and interactions with the probed dinucleotide are vastly different in the two cases. Here, … Show more
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