Table 1.

Secondary structures of Aβ_1-42, AβpE_3-42, and their 1:1 combinations incubated in 50 mM NaCl + 50 mM Na,K-phosphate buffer (shaded rows) or 10 mM Na,K-phosphate buffer, pD 7.2, as determined by curve-fitting of FTIR amide I bands (see Figure S3). Average percentages for 10 min, 1 h, and 2 h incubation in aqueous media are presented. “Other” refers mostly to irregular structure.

	Aβ1-42	AβpE3-42	Aβ1-42 /AβpE3-42 (1:1)
α-helix	11.0±2.4	18.7±3.2	22.9±3.6
	24.8±5.1	13.6±1.8	16.3±2.1
β-sheet	50.4±4.6	43.0±4.4	34.5±3.9
	38.7±4.8	48.9±3.6	34.2±3.2
β-turn	18.1±3.3	20.3±1.7	28.4±2.4
	24.0±2.7	19.8±1.3	27.7±3.6
other	20.5±3.9	18.0±2.2	14.2±1.3
	12.5±3.6	17.7±2.6	21.8±2.7