Table 5. Protein blocks’ Z-scores of β-turn types.

		i	i+1	i+2	i+3
β-turn I	(+)	FJKL	KLN	BGLOP	CGOP
	(−)	aBCDEGHIMNOP	ABCDEFGHIJMOP	ACDEFHIJKM	ABDEFHIjKL
β-turn II	(+)	EG	HO	IK	AL
	(−)	aBCDFHjKLMnOP	ABCDEFgIjKLMNP	ABCDEFghjLMnO	BCDEFghiKMNoP
β-turn VIII	(+)	AFKP	ABL	CDGL	bCFK
	(−)	BCDEgHMNO	CDEFgHIjKMNop	aBefhIjKMnoP	ADIjLMnoP
β-turn I'	(+)	EGHjNO	HO	IP	A
	(−)	bcDfklMp	abcDefklM	bcDefhkMo	bcDefhklMp
β-turn II'	(+)	abHO	J	ABLO	CGLP
	(−)	DfM	abcDfkMo	cDfkmp	adkm
β-turn VIa1	(+)	Cdp	EF	BHK	BIL
	(−)	fkM	dkM	cdflM	ckM
β-turn VIa2	(+)	Bi	aeFg	BK	gjlo
	(−)	m	m	m	m
β-turn VIb	(+)	bCdj	aCD	Df	bDf
	(−)	fkM	fklM	klM	clM
β-turn IVori	(+)	EFGHiJKO	BHIJKLNO	ABGhIjLNOP	ACGiOP
	(−)	BCDM	CDFM	CDeFkM	DEfklM
β-turn IV1	(+)	AEGp	aEGHo	HIKP	AIL
	(−)	cDfhklMo	bcDfklMnp	abcDflMo	cDkMnp
β-turn IV2	(+)	FJKL	BKLno	bGLP	Cg
	(−)	bcDehmop	CDFghiMp	acDeFhiKm	aDeiL
β-turn IV3	(+)	FjK	KL	BLmNo	cGMnOp
	(−)	bCDehinop	abCDeFhiop	aCDeFhik	abDeFhikl
β-turn IV4	(+)	FJK	KLN	BGLOP	CGoP
	(−)	bDehmno	acDfhiMp	acDefhikM	abDefhiklm
β-turn IVmisc	(+)	EFGHIjkNO	BHIJLNOP	ABGIJLnOP	AbCgjP
	(−)	bCDM	CDeFM	cDfkM	DeM