pentonn.
/ˈpɛntɒn/, U.S. /ˈpɛnˌtɑn/ Virology.
A capsomere which occupies each of the twelve vertices of the icosahedral capsid of an adenovirus, surrounded by five other capsomeres.
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capsomere1962
capsid1964
penton1966
1966 H. S. Ginsberg et al. in Virology 28 782/2 The unit at the twelve corners of the icosahedron should then be termed a penton because each has 5 neighbouring units (hexons).
1986 M. Kogut tr. H. G. Schlegel Gen. Microbiol. iv. 137 In the vertices there are five-cornered pentons consisting of five proteins (protomers).
2000 Proc. National Acad. Sci. U.S.A. 97 13784/1 Viral penton base binding to certain cellular integrins then mediates cell entry by receptor-mediated endocytosis via clathrin-coated pits.
This entry has been updated (OED Third Edition, September 2005; most recently modified version published online March 2022).
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n.1966- jumping-off spot
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