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. Author manuscript; available in PMC: 2012 Sep 24.
Published in final edited form as: Cell Host Microbe. 2008 Dec 11;4(6):592–599. doi: 10.1016/j.chom.2008.10.013

Table 1.

Quantitative Data from Tomograms of HIV-1 Budding Sites and Released Immature Virions

Released immature virions (n = 30) Buds in release-competent group (n = 41) Buds in budding-arrested group (n = 27)
Radius (nm) 63 ± 5 75 ± 7 67 ± 5 (66 ± 5)
Closure (degrees) 229 ± 35 253 ± 73 306 ± 66 (328 ± 22)
Number of Gag molecules 2400 ± 700 4100 ± 1700 3600 ± 1100 (3800 ± 770)

Radius of curvature and Gag shell closure was measured for particles and for buds fully contained in the sections, and the number of Gag molecules was calculated from these numbers and the known lattice constant (see Supplemental Data). For definition of release-competent and budding-arrested groups, see Table 3. In the budding-arrested group, the numbers in parentheses indicate the values when the three budding sites that did not have a late bud morphology (i.e., Gag closure >180°) were discarded.