Table 1. Distribution of secondary structure states (left) and confusion matrix for turn states assignments (right).

	α	β	coila	turnsb,c	DSSP	STRIDE	XTLSSTR	PSEA	DEFINE	SECSTR	KAKSI	SEGNO
DSSP	37.42	21.61	19.78	21.19b(20.53)c	--	89.03	76.39	85.48	59.30	84.28	74.70	87.55
STRIDE	38.88	22.16	19.06	19.90 (20.24)	94.49	--	79.33	88.53	59.78	85.12	79.07	91.22
XTLSSTR	41.04	19.57	19.57	19.82 (11.39)	81.32	79.55	--	83.76	58.46	74.50	77.22	85.53
PSEA	34.04	24.01	15.70	26.25	69.27	67.53	63.81	--	59.75	65.77	73.26	76.16
DEFINE	28.36	25.92	14.76	30.96	40.80	39.87	38.71	50.52	--	38.56	46.38	44.51
SECSTR	38.74	20.33	21.24	19.69	90.73	86.20	75.17	87.50	60.11	--	77.14	87.03
KAKSI	39.49	22.02	15.53	22.97	71.78	72.40	68.53	88.12	59.40	67.68	--	77.40
SEGNO	35.94	22.41	19.62	22.02	84.11	82.77	77.30	89.83	59.29	77.64	76.74	--

^a coil state frequency corresponds to residues not associated to α-helix, β-strand or turns. ^b turn state frequency corresponds to residues assigned as β-turn and not associated to α-helix or β-strand (our assignment). ^c number in parenthesis are the frequency of turns originally given by the corresponding methods (original assignment method). For DSSP, it corresponds to turn and bent state.