Since BAG-1 is over-expressed in the human cervical cancer cell line HeLa, we attempted to identify proteins that bind to the BAG-1 promoter by Southwestern blot analysis, using the BAG-1 promoter as a probe to screen the Human HeLa 5′ stretch plus cDNA library, λTripIEx (Clontech). Here, BAG1 is linked to cervical cancer.