Related Experiment Video
Updated: Aug 9, 2026

Analyzing and Building Nucleic Acid Structures with 3DNA
Published on: April 26, 2013
Chiroptical transcription of helical information through supramolecular harmonization with dynamic helices
Yan-Ming Guo1, Hideaki Oike, Takuzo Aida
1Aida Nanospace Project, Exploratory Research for Advanced Technology, Japan Science and Technology Agency (JST), 2-41 Aomi, Koto-ku, Tokyo 135-0064, Japan.
Abstract:
With biologically important "peptide bundling" as the motif, new chromophoric cyclic host 1 was designed, which consists of two zinc porphyrin units that are connected by dynamic peptide helices of nonameric aminoisobutyric acid (Aib) units. Upon inclusion of pyridine-anchored helical peptides between the zinc porphyrin units, 1 displayed an intense exciton-coupled circular dichroism (CD) band at 410-450 nm, whose sign reflected the helical sense of the guest peptides. Studies with conformationally defined dehydrophenylalanine-containing analogues indicated that the dynamic helical chains in the host are stereochemically harmonized with right- or left-handed helices of the guest peptides in a confined nano space, leading to either clockwise- or anticlockwise-twisted geometry (chiroptical output) of the connecting zinc porphyrin chromophores.
Related Concept Videos
Protein Organization
Protein Folding
Molecular Chaperones and Protein Folding
The...
Chirality in Nature
Protein Folding
Protein Structure Is Critical to Its Biological Function
Proteins perform a wide range of biological functions such as catalyzing chemical reactions, providing...
Molecular Chaperones and Protein Folding
The...

