Abstract
The human papillomavirus (HPV) capsomeres (pentamers of major capsid protein L1), which constitute along with L2 the virion capsid, can assemble themselves alone into the L1-capsid particles in vivo and in vitro, depending on intercapsomeric disulfide bonds. To study a possible role of L2 in capsid assembly, we examined the interaction between HPV16 L2 and capsomeres under the conditions that inhibit the formation of disulfide bonds in vitro and in vivo. The purified L2 bound to free capsomeres prepared by disassembling L1-capsids but not to the L1-capsids in vitro. And the L2 was found to help capsomeres assemble into smaller capsid-like particles independently of intercapsomeric disulfide bonding. Similar particles were obtained from the Sf9 cells co-infected with baculoviruses expressing L2 and an L1 mutant that lacks a C-terminal cysteine (C428S) and can form capsomeres but no capsids when expressed alone. These findings suggest that L2, which is known to bind both viral DNA and L1, may contribute to the formation of the virion by linking viral DNA and capsomeres and by helping capsomeres assemble before the virion capsid structure is completed by dintercapsomeric disulfide bonding.
Similar content being viewed by others
References
M.E. Hagensee N.H. Olson T.S. Baker D.A. Galloway (1994) J Virol 68 4503–4505 Occurrence Handle8207824
R. Kirnbauer J. Taub H. Greenstone R. Roden M. Durst L. Gissmann D.R. Lowy J.T. Schiller (1993) J Virol 67 6929–6936 Occurrence Handle8230414
K. Matsumoto H. Yoshikawa Y. Taketani K. Yoshiike T. Kanda (1997) Jpn J Cancer Res 88 369–375 Occurrence Handle9197528
K. Kawana H. Yoshikawa Y. Taketani K. Yoshiike T. Kanda (1998) J Virol 72 10298–10300 Occurrence Handle9811779
C. Volpers P. Schirmacher R.E. Streeck M. Sapp (1994) Virology 200 504–512 Occurrence Handle10.1006/viro.1994.1213 Occurrence Handle8178438
H. Pfister P.G. Fuchs (1994) Intervirology 37 143–149 Occurrence Handle7843925
M.P. McCarthy W.I. White F. Palmer-hill S. Koenig J.A. Suzich (1998) J Virol 72 32–41 Occurrence Handle9420197
Y. Ishii K. Tanaka T. Kanda (2003) Virology 308 128–136 Occurrence Handle10.1016/S0042-6822(02)00099-5 Occurrence Handle12706096
Y. Stauffer K. Raj K. Masternak P. Beard (1998) J Mol Biol 283 529–536 Occurrence Handle10.1006/jmbi.1998.2113 Occurrence Handle9784363
R.B.S. Roden H.L. Greenstone R. Kirnbauer F.P. Booy J. Jessie D.R. Lowy J.T. Schiller (1996) J Virol 70 5875–5883 Occurrence Handle8709207
K.N. Zhao X.Y. Sun I.H. Frazer J. Zhou (1998) Virology 243 482–491 Occurrence Handle10.1006/viro.1998.9091 Occurrence Handle9568045
J. Zhou D.J. Stenzel X.Y. Sun I.H. Frazer (1993) J Gen Virol 74 763–768 Occurrence Handle8385700
M.M. Okun P.M. Day H.L. Greenstone F.P. Booy D.R. Lowy J.T. Shiller R.B.S. Roden (2001) J Virol 75 4332–4342 Occurrence Handle10.1128/JVI.75.9.4332-4342.2001 Occurrence Handle11287582
C. Leder J.A. Kleinschmidt C. Wiethe M. Muller (2001) J Virol 75 9201–9209 Occurrence Handle10.1128/JVI.75.19.9201-9209.2001 Occurrence Handle11533183
J. Zhou X.Y. Sun K. Louis I.H. Frazer (1994) J Virol 68 619–625 Occurrence Handle8289365
K.A. Becker L. Florin C. Sapp G.G. Maul M. Sapp (2004) J Virol 78 1121–1128 Occurrence Handle10.1128/JVI.78.3.1121-1128.2004 Occurrence Handle14722267
R.L. Finnen K.D. Erickson X.S. Chen R.L. Garcea (2003) J Virol 77 4818–4826 Occurrence Handle10.1128/JVI.77.8.4818-4826.2003 Occurrence Handle12663788
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Ishii, Y., Ozaki, S., Tanaka, K. et al. Human Papillomavirus 16 Minor Capsid Protein L2 Helps Capsomeres Assemble Independently of Intercapsomeric Disulfide Bonding. Virus Genes 31, 321–328 (2005). https://doi.org/10.1007/s11262-005-3250-3
Received:
Revised:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/s11262-005-3250-3