TABLE 2.

Activation (n-fold) of cyclin A-CDK2 histone and pRb kinase activity by HPV E7^a

Form of E7	Kinase activity of:
	Histone H1	pRb
16E7b	14.0	NDc
GST-16E7	18.2	2.3
GST-31E7	12.6	1.6
GST-6bE7	15.8	2.2

^aKinase activity is expressed as increase in kinase activity over controls not receiving E7.

^bHPV16 E7 purified away from GST tag.

^cActivity not determined.