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Virology. 2013 Oct;445(1-2):169-74. doi: 10.1016/j.virol.2013.05.038. Epub 2013 Jun 22.

The papillomavirus major capsid protein L1.

Author information

1
Lab of Cellular Oncology, Center for Cancer Research, NCI, USA. Electronic address: buckc@mail.nih.gov.

Abstract

The elegant icosahedral surface of the papillomavirus virion is formed by a single protein called L1. Recombinant L1 proteins can spontaneously self-assemble into a highly immunogenic structure that closely mimics the natural surface of native papillomavirus virions. This has served as the basis for two highly successful vaccines against cancer-causing human papillomaviruses (HPVs). During the viral life cycle, the capsid must undergo a variety of conformational changes, allowing key functions including the encapsidation of the ~8 kb viral genomic DNA, maturation into a more stable state to survive transit between hosts, mediating attachment to new host cells, and finally releasing the viral DNA into the newly infected host cell. This brief review focuses on conserved sequence and structural features that underlie the functions of this remarkable protein.

KEYWORDS:

HPV; HPV16; L2; Maturation; Papillomaviridae; Virion

PMID:
23800545
PMCID:
PMC3783536
DOI:
10.1016/j.virol.2013.05.038
[Indexed for MEDLINE]
Free PMC Article

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