S1 Chain length-dependent helical motifs and self-association of -peptides with constrained side-chains Anasztázia Hetényi, † István Mandity, † Tamás A. Martinek, † Gábor K. Tóth, ‡ and Ferenc Fülöp* ,† Contribution from the Institute of Pharmaceutical Chemistry, and Department of Medical Chemistry, University of Szeged, H-6701 Szeged, POB 121, Hungary SUPPORTING INFORMATION TABLE OF CONTENTS Title Page Figure S1. RP-HPLC for 7-9. S2 Figure S2. MS spectra for 7-9. S3 Table S1: ln (I/I 0 ) vs. G 2 for 7 S4 Figure S3: ln (I/I 0 ) vs. G 2 for 7. for TMS, •, , , for 1 st , 2 nd and 3 rd measurements, respectively. S4 Table S2: ln (I/I 0 ) vs. G 2 for 8 S5 Figure S4: ln (I/I 0 ) vs. G 2 for 8. for TMS, •, , , for 1 st , 2 nd and 3 rd measurements, respectively. S5 Table S3: ln (I/I 0 ) vs. G 2 for 9 S6 Figure S5: ln (I/I 0 ) vs. G 2 for 9. for TMS, •, , , for 1 st , 2 nd and 3 rd measurements, respectively. S6 Figure S6. Diagnostic cross-peaks in ROESY spectra for 7 in CD 3 OD, blue: negative intensity levels. S7 Table S4. Signal Assignment for a) 7, b) 8 and c) 9 in CD 3 OD S7 Table S5. Noe Interactions for a) 7, b) 8 and c) 9 in CD 3 OD S8 Figure S7. 1 H spectra for a) 7, b) 8 and c) 9 in DMSO. S8 Figure S8. Diagnostic cross-peaks in ROESY spectra for a) 7, b) 8 and c) 9 in DMSO. red: positive intensity levels, blue: negative intensity levels. S9 Table S6. Signal Assignment for a) 7, b) 8 and c) 9 in DMSO S10 Computational data (at the B3LYP/3-21G level) S11