DNA binding motif: Common sites on different proteins which facilitate their binding to DNA. Examples are leucine zipper and zinc finger proteins. Any such protein is called DNA-binding protein.
α helices have particular significance in DNA binding motifs, including helix-turn-helix motifs, leucine zipper motifs and zinc finger motifs. This is because of the convenient structural fact that the diameter of the α helix is 1.
 See also: Membrane, Pleated sheet, Helix, Memory, Lysis
  
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