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The murid herpesvirus-4 gL regulates an entry-associated conformation change in gH

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Abstract

The glycoprotein H (gH)/gL heterodimer is crucial for herpesvirus membrane fusion. Yet how it functions is not well understood. The Murid Herpesvirus-4 gH, like that of other herpesviruses, adopts its normal virion conformation by associating with gL. However, gH switched back to a gL-independent conformation after virion endocytosis. This switch coincided with a conformation switch in gB and with capsid release. Virions lacking gL constitutively expressed the down-stream form of gH, prematurely swiched gB to its down-stream form, and showed premature capsid release with poor infectivity. These data argue that gL plays a key role in regulating a gH and gB functional switch from cell binding to membran fusion. Copyright: © 2008 Gillet et al.

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Gillet, L., Colaco, S., & Stevenson, P. G. (2007). The murid herpesvirus-4 gL regulates an entry-associated conformation change in gH. PLoS ONE, 3(7). https://doi.org/10.1371/journal.pone.0002811

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