Table 1. Dipeptides Considered in This Study.

nonpolar dipeptides (8 sequences)
FF	FV	LL	VI	WW	YF	YV	YY

polar and charged dipeptides (2 sequences)
SS	KE

amphipolar dipeptides (27 sequences)a
GF	GY	NW	PW	QW	SW	TW
FG	FN	FP	FQ	FS	FT	LG	LN	LP	LQ	LS	LT
WG	WQ	YG	YN	YP	YQ	YS	YT

dipeptides with nonpolar and charged residues (18 sequences)
DF	DW	DY	EW	FE	KF	KW	KY	RF	RW	WK	YE	YR
LD	LE	LH	LK	LR

^aProline is listed as a polar residue, since it occurs mainly on the protein surface.