The crystal structure of human adenovirus 2 penton baseThe crystal structure of human adenovirus 2 penton base
Structural highlights
1x9p is a 1 chain structure with sequence from Human adenovirus 2. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
CAPSP_ADE02 Major capsid protein that self-associates to form penton base pentamers, each in the shape of a pentagon, situated at the 12 vertices of the pseudo T=25 capsid. Involved in virus secondary attachment to host cell after initial attachment by the fiber protein. Binds host integrin heterodimer ITGAV-ITGB5 (alphaV-beta5) thereby triggering clathrin-mediated endocytosis of virions. Mediates initial virus attachment to CXADR-negative cells. Binding to integrins ITGAV-ITGB5 also seems to induce macropinocytosis uptake of the virus. As the virus enters the host cell, penton proteins are shed concomitant with virion acidification in the endosome.[1][2][3]
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
↑Meier O, Boucke K, Hammer SV, Keller S, Stidwill RP, Hemmi S, Greber UF. Adenovirus triggers macropinocytosis and endosomal leakage together with its clathrin-mediated uptake. J Cell Biol. 2002 Sep 16;158(6):1119-31. Epub 2002 Sep 9. PMID:12221069 doi:http://dx.doi.org/10.1083/jcb.200112067
↑Lyle C, McCormick F. Integrin alphavbeta5 is a primary receptor for adenovirus in CAR-negative cells. Virol J. 2010 Jul 8;7:148. doi: 10.1186/1743-422X-7-148. PMID:20615244 doi:10.1186/1743-422X-7-148
↑Liu H, Jin L, Koh SB, Atanasov I, Schein S, Wu L, Zhou ZH. Atomic structure of human adenovirus by cryo-EM reveals interactions among protein networks. Science. 2010 Aug 27;329(5995):1038-43. PMID:20798312 doi:10.1126/science.1187433
