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Abstract. Many prokaryotic and eukaryotic DNA-binding proteins use a helix-turn-helix (HTH) structure for DNA recognition. Here we describe a new family of eukaryotic HTH proteins, the Pipsqueak (Psq) family, which includes proteins from fungi, sea urchins, nematodes, insects, and vertebrates. Three subgroups of the Psq family can be distinguished. Like the HTH proteins of the prokaryotic resolvase...
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