Table 2. Percent secondary structure content of SP-B (1–25,63–78) (Super Mini-B), SP-B (8–25,63–78) (Mini-B) and SP-B (1–7) (the insertion sequence) in SDS micelles calculated from CD spectra (average of 4 scans).

Secondary Structure (%)	α-helix	310-helix	β-Sheet	Turn	Polyproline II	Unordered
SP-B (1–25,63–78) (Super Mini-B) ContinLL Method	24	7	13	14	6	36
SP-B (1–25,63–78) (Super Mini-B) K2D Method	29	–	16	–	–	55
SP-B (8–25,63–78) (Mini-B) ContinLL Method	37	9		13	5	30
SP-B (8–25,63–78) (Mini-B) K2D Method	42	–	16	–	–	41

Deconvolution of CD spectra was accomplished using CDPro, with basis set 2 and the CONTIN/LL algorithm [49] and also with the K2D method [52].