X Y and Z are three components of a regulatory system Both X

X, Y and Z are three components of a regulatory system. Both X and Y are transcription activators. How might X, Y and Z interact so as to form a sign sensitive delay element? Show graphically how sign sensitive delay element will effect gene expression.

Solution

The X Transcription factor regulates transcription factor Y. Both X and Y regulate Z in a combined way. The action of X and Y is integrated at Z promoter which inturn carries out the gene expression. Z regulates the transcription rate. The Z protein will activate or repress the expression of gene.