Table 1.

Investigated peptides

Peptide	Type	Sequence	Proposed structure
FP23	FP	AVGIGALFLGFLGAAGSTMGARS-NH2	α-helix, β-sheet (Qiang et al. 2007; Zheng et al. 2006)
Magainin 2	AMP	GIGKFLHSAKKFGKAFVGEIMNS	Amphiphilic α-helix (Maloy and Kari 1995; Tremouilhac et al. 2006)
PGLa	AMP	GMASKAGAIAGKIAKVALKAL-NH2	Amphiphilic α-helix (Afonin et al. 2008; Tremouilhac et al. 2006)
MSI-103	AMP	KIAGKIAKIAGKIAKIAGKIA-NH2	Amphiphilic α-helix (Maloy and Kari 1995; Strandberg et al. 2008)
Alamethicin*	AMP	Ac-UPUAUAQUVUGLUPVUUEQF-ol	α-helix, 310-helix (Maisch et al. 2009)
Gramicidin S‡	AMP	Cyclo-[PVOLf PVOLf]	Cyclic with β-turns (Wadhwani et al. 2006)
Penetratin	CPP	RQIKIWFQNRRMKWKK	α-helix (Derossi et al. 1998)
Transportan	CPP	GWTLNSAGYLLGKINLKALAALAKKIL-NH2	Kinked α-helix (Lindberg et al. 2001)
MAP	CPP	KLALKLALKALKAALKLA-NH2	α-helix, β-aggregate (Scheller et al. 1999; Wadhwani et al. 2008)
SAP	CPP	VRLPPPVRLPPPVRLPPP	Polyproline-II-helix (Pujals and Giralt 2008)
Pep1	CPP	KETWWETWWTEWSQPKKKRKV	Trp-rich (Henriques and Castanho 2004)

For sequences, lower case characters indicate D-amino acid; * U: AIB: aminoisobutyric acid; ol, alcoholic C-terminus; Ac, acetylated N-terminus

^‡O: ORN: ornithine after aminoisobutytic acid