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. 1998 Jun;72(6):4911–4917. doi: 10.1128/jvi.72.6.4911-4917.1998

FIG. 1.

FIG. 1

Replication origins of HPV-18 and HPV-11. Indicated are the binding sites for viral proteins E1 and E2 and for cellular transcription factors, YY1, Sp1, and TBP. The YY1BS in HPV-18 ori overlaps the putative E1BS (1, 25).