Right-handed helical structure of expanded oligo(L-leucine) containing [Ru(terpyridine)2]2+ moieties.
Expanded oligo(l-leucine)s, containing an alternate arrangement of a bis(terpyridine)ruthenium(II) moiety and a l-leucine residue, were synthesized and characterized by 1H NMR, UV, CD, and electrochemical properties. The intensity of CD spectra per ruthenium unit increased with the elongation of the peptide chain. 1H NMR analysis of a tetramer indicated the right-handed helical structure in acetonitrile.
Okamura
Taka-aki
TA
Department of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan.
Iwamura
Taku
T
Seno
Shuichiro
S
Yamamoto
Hitoshi
H
Ueyama
Norikazu
N
D002942:Circular Dichroism; D008958:Models, Molecular; D009842:Oligopeptides / Q000737:chemistry; D009942:Organometallic Compounds / Q000737:chemistry*; D010455:Peptides / Q000737:chemistry*; D017433:Protein Structure, Secondary; D011725:Pyridines / Q000737:chemistry*; D012428:Ruthenium / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet
D009842:Oligopeptides; D009942:Organometallic Compounds; D010455:Peptides; D011725:Pyridines; C027819:polyleucine; D012428:Ruthenium