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. Author manuscript; available in PMC: 2010 Aug 7.
Published in final edited form as: J Mol Biol. 2009 May 29;391(1):227–245. doi: 10.1016/j.jmb.2009.05.069

Table II.

Thermodynamic parameters measured for gp26-like tail needles.

Tail Needle Family Host # aa’s MWTrimers kDa # Heptads Tm (°C) Cm GdnHCl (M)
P22 Podoviridae Salmonella enterica 233 74.2 11 85 6.4
HK620 Podoviridae E. Coli 233 75.2 11 90 7.4
Sf6 Podoviridae Shigella flexneri 282 91.8 11 88 7.4
HS1 Podoviridae E. Coli 317 102 16 88 7.4
MiniHS1 - - 241 77 5 82 6.8