IR-study on stacking manner of peptide nanorings in peptide nanotubes

Yukiko Nagai, Tsutomu Nakanishi, Hajime Okamoto, Kyozaburo Takeda, Yukio Furukawa, Kenji Usui, Hisakazu Mihara

    Research output: Contribution to journalArticle

    7 Citations (Scopus)

    Abstract

    We here report our theoretical as well as experimental studies on the stacking manner of peptide nanorings (PNRs) in peptide nanotubes (PNTs). We focus on the molecular vibrations of N-H and C=O stretching modes and discuss this subject via their infrared (IR) spectroscopy, because PNTs are formed by the inter-ring H bonds between the adjacent PNRs via -N-H⋯O=C-. Symmetry analysis based on group theory reveals that parallel stacking causes two IR active modes in these molecular vibrations while three modes are active in the antiparallel stacking. This difference in the number of IR active modes is determined only by the stacking manner and not by the number of amino acid residues composing the PNRs. By using two typical PNRs of cyclo[-(L-Gln-D-Ala) 3] and cyclo[-(L-Gln-D-Ala)4], we further studied the favorable stacking manners of PNRs via IR observation. Our IR experiments as well as the ab initio energetics show that the former PNRs create a PNT by stacking themselves in parallel while the latter PNRs do so by stacking themselves in an antiparallel manner.

    Original languageEnglish
    Pages (from-to)7654-7661
    Number of pages8
    JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
    Volume44
    Issue number10
    DOIs
    Publication statusPublished - 2005 Oct 11

    Fingerprint

    Nanorings
    Nanotubes
    Peptides
    peptides
    nanotubes
    Infrared radiation
    Molecular vibrations
    Group theory
    vibration
    group theory
    Stretching
    amino acids
    Amino acids
    Infrared spectroscopy
    infrared spectroscopy

    Keywords

    • Ab initio study
    • Antiparallel stacking
    • IR spectroscopy
    • Parallel stacking
    • Peptide nanoring
    • Peptide nanotube

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

    Cite this

    IR-study on stacking manner of peptide nanorings in peptide nanotubes. / Nagai, Yukiko; Nakanishi, Tsutomu; Okamoto, Hajime; Takeda, Kyozaburo; Furukawa, Yukio; Usui, Kenji; Mihara, Hisakazu.

    In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 44, No. 10, 11.10.2005, p. 7654-7661.

    Research output: Contribution to journalArticle

    Nagai, Yukiko ; Nakanishi, Tsutomu ; Okamoto, Hajime ; Takeda, Kyozaburo ; Furukawa, Yukio ; Usui, Kenji ; Mihara, Hisakazu. / IR-study on stacking manner of peptide nanorings in peptide nanotubes. In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 2005 ; Vol. 44, No. 10. pp. 7654-7661.
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