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. Author manuscript; available in PMC: 2014 Aug 10.
Published in final edited form as: J Mol Biol. 2008 Jun 10;381(5):1133–1144. doi: 10.1016/j.jmb.2008.06.007

Table 2.

Temperature-dependent equilibrium constant Keq = [turn]/[sheet] for the sheet ↔ turn transition of I3α and N9α of penetratin in DMPC/DMPG membranes (8:7) at P/L = 1:15 and 1:30

T (K) P/L = 1:15 P/L = 1:30


I3α N9α I3α N9α
243 0.33 0.58 0.68 1.00
263 0.34 0.56 0.29 0.96
283 0.26 0.52 0.54 1.25
288 0.37 1.78 — —
293 0.49 2.68 2.21 4.08
298 1.00 2.62 7.29 32.8
303 1.00 2.76 4.21 4.76
305 1.45 5.85 — —
310 3.20 7.13 18.0 15.5