Table 1. Structure of amidinopeptides and folded controls.

Peptide	Amidine	sequencea
	Orientation	Strand	Turn	Strand
YKL		RYVEV	pG	OKILQ
1-Tyr(NH)2	‘Out’	RY(NH)VEV	pG	OKILQ
2-Val(NH)3	‘In’	RYV(NH)EV	pG	OKILQ
3-Glu(NH)4	‘Out’	RYVE(NH)V	pG	OKILQ
4-Gly(NH)7	‘Out’	RYVEV	pG(NH)	OKILQ
5-Orn(NH)8	‘In’	RYVEV	pG	O(NH)KILQ
6-Ile(NH)10	‘In’	RYVEV	pG	OKI(NH)LQ
7		RYVEV	PG	OKILQ
8b

^aAll peptides except 8 are capped at the N-terminus with Ac and have a C-terminal amide (–CONH₂).

^bHead-to-tail cyclic peptide.