Deletion analysis of the dystrophin‐actin binding domain

Authors:
  • PMP.L. Mills
    P.L. Mills
  • JCJ.S. Chamberlain
    J.S. Chamberlain

Abstract
Three sequence motifs at the N‐terminus of dystrophin have previously been proposed to be important for binding to actin. By analyzing a series of purified bacterial fusion proteins deleted for each of these sites we have demonstrated that none of the three are critical for dystrophin‐actin interactions. Instead, our data suggest that sequences in the N‐terminal 90 amino acids of dystrophin, excluding a conserved KTFT motif, contain the major site for interaction with actin.