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Determination of Solution Conformation of Allergenically Active Pentasaccharitol Obtained from Sea Squirt Antigen by Yuko Kato; Masaya Ohta; Tatsuo Munakata; Masako Fujiwara; Naoyuki Fujii; Seiko Shigeta; Fumito Matsuura is a Chemistry article available to read on EtoBox.

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## Abstract Pentasaccharitol, GalNAcβ1–4(GalNAcα1–2Fucα1–3)GlcNAcβ1–3GalNAc‐ol, termed HPG‐β2‐N5a, is an allergenically active __O__‐linked oligosaccharitol derived from a sea squirt H‐antigen. Concerning the interaction between the allergen and specific IgE, an analysis of the solution conformation of the saccharitol was carried out. ^1^H and ^13^C NMR assignments for the pentasaccharitol were obtained using 1D‐HOHAHA, TOCSY, DEPT135, HSQC and HMBC techniques. The solution conformation was determined using a combination of 2D‐NMR ROESY data and distance geometry (DG) calculations in dihedral angle space with the DADAS 90 program. Two conformers, family A (FamA) and family B (FamB), that satisfied almost all the NOE constraints were obtained, and supplemental MD calculations revealed that FamA was in conformational equilibrium whereas FamB was rather flexible. The molecule of HPG‐β2‐N5a had a layered and not a linear conformation. Copyright © 2001 John Wiley & Sons, Ltd.

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Author

Yuko Kato; Masaya Ohta; Tatsuo Munakata; Masako Fujiwara; Naoyuki Fujii; Seiko Shigeta; Fumito Matsuura

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; John Wiley and Sons Ltd; Wiley (ISSN 0749-1581)

Published

2001

Language

EN

Field

Chemistry (Physical Sciences)