机译：@@ MYB proteins are transcription factors present in all eukaryotes,sharing a common DNA-binding domain that consists of one to three imperfect helix-helix-turn-helix repeats of about 50 amino acids,called RI,R2,and R3 respectively [1].In animals and yeast these proteins represent a small gene family [1].Animal R1R2R3-MYB proteins have been described for their role in cell cycle regulation mainly at the G1/S,but also at the G2/M transition,as firstly demonstrated in Drosophila [2].
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