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J. Virol., Nov 1995, 7362-7366, Vol 69, No. 11
BL Trus, FL Homa, FP Booy, WW Newcomb, DR Thomsen, N Cheng, JC Brown and AC Steven
Recently, recombinant baculoviruses have been used to show that expression
of six herpes simplex virus type 1 genes results in the formation of
capsid-like particles. We have applied cryoelectron microscopy and
three-dimensional image reconstruction to establish their structural
authenticity to a resolution of approximately 2.7 nm. By comparing capsids
assembled with and without the expression of gene UL35, we have confirmed
the presence of six copies of its product, VP26 (12 kDa), around each hexon
tip. However, VP26 is not present on pentons, indicating that the
conformational differences between the hexon and penton states of the major
capsid protein, VP5, extend to the VP26 binding site.
Copyright © 1995, American Society for Microbiology
Herpes simplex virus capsids assembled in insect cells infected with recombinant baculoviruses: structural authenticity and localization of VP26
Laboratory of Structural Biology, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, Maryland 20892-2755, USA.
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