Format

Send to

Choose Destination
See comment in PubMed Commons below
Carbohydr Polym. 2013 Feb 15;92(2):1737-42. doi: 10.1016/j.carbpol.2012.11.025. Epub 2012 Nov 17.

The crystal structure of mono-ethylenediamine β-chitin from synchrotron X-ray fiber diffraction.

Author information

1
Department of Biomaterial Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Tokyo, Japan. utkspecial@hotmail.com

Abstract

The crystal structure of a complex of β-chitin with ethylenediamine (EDA) was determined by synchrotron X-ray fiber diffraction. Data were collected from a sample prepared from the bathophilous tubeworm Lamellibrachia satsuma. The unit cell contains one chain having one N-acetylglucosamine residue in the asymmetric unit with the hydroxymethyl group in gt conformation (a=4.682 Å, b=14.351 Å, c=10.275 Å and γ=96.24° in space group P2(1)). The complexed EDA molecule has a trans conformation with one amino group tightly bound to the primary alcohol hydroxyl group O6 atom of the N-acetylglucosamine residue in an arrangement similar to that found in the EDA-cellulose I complex. The other amino group has no detectible hydrogen bonding and higher thermal displacement. This common interaction between EDA and O6 would appear to be the dominant driving interaction for complex formation with both β-chitin and cellulose.

PMID:
23399214
DOI:
10.1016/j.carbpol.2012.11.025
[Indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science
    Loading ...
    Support Center