Topological characteristics of helical repeat proteins.

  title={Topological characteristics of helical repeat proteins.},
  author={Matthew R. Groves and David Barford},
  journal={Current opinion in structural biology},
  volume={9 3},
The recent elucidation of protein structures based upon repeating amino acid motifs, including the armadillo motif, the HEAT motif and tetratricopeptide repeats, reveals that they belong to the class of helical repeat proteins. These proteins share the common property of being assembled from tandem repeats of an alpha-helical structural unit, creating extended superhelical structures that are ideally suited to create a protein recognition interface. 

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