Genovese, N. ., Broker, T. ., & Chow, L. . (2011). Nonconserved lysine residues attenuate the biological function of the low-risk human papillomavirus E7 protein. Journal of Virology, 85(11), 5546-54. https://doi.org/10.1128/JVI.02166-10 (Original work published 2011)