Tm. Dwyer et Sc. Froehner, DIRECT BINDING OF TORPEDO SYNTROPHIN TO DYSTROPHIN AND THE 87 KDA DYSTROPHIN HOMOLOG, FEBS letters, 375(1-2), 1995, pp. 91-94
Syntrophin, a 58-kDa membrane-associated protein, is one component of
a protein complex associated with dystrophin and other members of the
dystrophin family, including the 87-kDa homologue (87K protein), To ch
aracterize interactions between syntrophin and 87K protein, me used an
in vitro overlay binding assay, We demonstrate that purified Torpedo
syntrophin binds directly to dystrophin and 87K, By expressing overlap
ping regions of the 87K protein as bacterial fusion proteins for bindi
ng targets, we show that a 52-amino acid region of 87K (residues 375-4
26) is sufficient for binding syntrophin.