The nucleus of each of your cells contains multiple long strands of DNA with all the instructions to make your entire body. If you stretched out the DNA found in one of your cells it would be 2 to 3 meters long. To fit all of this DNA inside a tiny cell nucleus the DNA is wrapped tightly around proteins. The enzyme in meat tenderizer is a protease, which is an enzyme that cuts proteins into small pieces. As this enzyme cuts up the proteins the DNA will unwind and separate from the proteins. The protease in meat tenderizer actually comes from plants, but animals also make protease