Construct: Amino acid replacement: P407A. Amino acid replacement: P412A. Amino acid replacement: P413A. Amino acid replacement: P414A. Amino acid replacement: P470A. Amino acid replacement: P474A. Amino acid replacement: P475A. Amino acid replacement: P476A. Construct encodes a mutated form of ena, the mutations are in the putative binding site for the Abl SH3 domain.