Orthanilic acid-promoted reverse turn formation in peptides
作者:Sangram S. Kale、Gowri Priya、Amol S. Kotmale、Rupesh L. Gawade、Vedavati G. Puranik、P. R. Rajamohanan、Gangadhar J. Sanjayan
DOI:10.1039/c3cc40522b
日期:——
Orthanilic acid (2-aminobenzenesulfonic acid, (S)Ant), an aromatic beta-amino acid, has been shown to be highly useful in inducing a folded conformation in peptides. When incorporated into peptide sequences (Xaa-(S)Ant-Yaa), this rigid aromatic beta-amino acid strongly imparts a reverse-turn conformation to the peptide backbone, featuring robust 11-membered-ring hydrogen-bonding.
Reversal of H-bonding direction by N-sulfonation in a synthetic reverse-turn peptide motif
作者:Kuruppanthara N. Vijayadas、Amol S. Kotmale、Shridhar H. Thorat、Rajesh G. Gonnade、Roshna V. Nair、Pattuparambil R. Rajamohanan、Gangadhar J. Sanjayan
DOI:10.1039/c4ob02438a
日期:——
This manuscript depicts an intriguing example of H-bonding reversal upon introduction of a sulfonamide linkage at the N-terminus of a synthetic reverse-turn peptide.
Carboxamide versus Sulfonamide in Peptide Backbone Folding: A Case Study with a Hetero Foldamer
作者:Veera V. E. Ramesh、Sangram S. Kale、Amol S. Kotmale、Rupesh L. Gawade、Vedavati G. Puranik、P. R. Rajamohanan、Gangadhar J. Sanjayan
DOI:10.1021/ol4002762
日期:2013.4.5
Strikingly dissimilar hydrogen-bonding patterns have been observed for two sets of closely similar hetero foldamers containing carboxamide and sulfonamides at regular intervals. Although both foldamers maintain conformational ordering, the hydrogen-bonding pattern and backbone helical handedness differ diametrically.