The lac operon contains what is known as the CAP site, located upstream of the promoter along the DNA. The CAP site gets its name from a protein-the catabolite activator protein-that can bind there.

Hing C. Wong, Anna Lisa Fear, Roger D. Calhoon, Gregory H. Eichinger, Raphael Mayer, Dorit Amikam, Moshe Benziman, David H. Gelfand, James H. Measde, Anne W. Emerick ...

In summary, we demonstrate that a fundamental relationship exists between gene expression and the number, length, and order of the genes in an operon. This relationship has important implications for ...

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