Table 1.

Decomposition of CD spectra of the peptide A and C

	Conformer population (%)
	Water	TFE	Bound
Peptide A
α-helix	0.0	44.3	30.6
β-sheet	46.9	18.7	27.3
turn	9.6	0.0	18.5
coil	43.6	37.0	23.6
Peptide C
α-helix	0.0	24.0	28.4
β-sheet	46.3	41.0	30.5
turn	10.3	0.0	17.8
coil	43.4	35.0	23.3

The CD spectra of free peptide A and C in water and 100% TFE (Figs. 1 ▶ and 2 ▶) and in their calpain-bound state (Figs. 3 ▶ and 4 ▶) have been decomposed as given in Materials and Methods to determine the relative proportion of conformers (given in percentage).