Swapping functional specificity of a MADS box protein: residues required for Arg80 regulation of arginine metabolism.

Abstract excerpt

Arg80 and Mcm1, two members of the MADS box family of DNA-binding proteins, regulate the metabolism of arginine in association with Arg81, the arginine sensor. In spite of the high degree of sequence conservation between the MADS box domains of the Arg80 and Mcm1 proteins (56 of 81 amino acids), these domains are not interchangeable. To determine which amino acids define the specificity of Arg80, we swapped the...

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