A, UF of Ig 1-8 and Ig 8-15 at three stretch speeds. (Mean force
levels of typically 30 molecules are shown.) Linear fits show that UF is
∼5-10 pN higher in Ig 8-15. B, CL of each of the eight unfolding
peaks in Ig 1-8 and Ig 8-15. Results largely overlap. Results were fit with
linear lines (r2 of each line was >0.99), shown as
solid lines for Ig 1-8 and broken lines for Ig 8-15. The
inset shows the mean and S.E. of all slopes of Ig 1-8 and Ig 8-15
(shown as Ig 1-15) and of Ig 24-26 (from
Fig. 1B). C,
effect of αB-crystallin on UF of Ig 1-8 (stretch speed, 1000 nm/s). UF
is significantly increased by αB-crystallin. Lines, control, y
= 173 + 12.9x; αB-crystallin, y = 188 + 14.7x.
control, 31 molecules; αB-crystallin, 34
molecules. D, effect of αB-crystallin on UF of Ig 8-15 (stretch
speed, 1000 nm/s). UF is significantly increased by αB-crystallin.
Lines, control, y = 173 + 13.1x; αB-crystallin,
y = 195 + 13.1x. control, 22 molecules;
αB-crystallin, 25 molecules.