Structure of the polysaccharide isolated from the sheath of Sphaerotilus natans.

Abstract:

:A polysaccharide was isolated from the sheath of a sheathed bacterium, Sphaerotilus natans. The sheath polysaccharide (SPS) was composed of D-glucose and D-(N-acetyl)galactosamine in molar ratios of 1:4. Methylation linkage analysis revealed the presence of the residues of 4-linked glucose, 4-linked (N-acetyl)galactosamine, and 3-linked (N-acetyl)galactosamine in molar ratios of 1:3:1. The oligomer of SPS was prepared with an SPS-specific degrading enzyme from a sheath-degrading bacterium, Paenibacillus koleovorans. The oligomer was derivatized and subjected to fast atom bombardment-mass spectrometry to investigate the monosaccharide sequence of SPS. The structure of SPS was confirmed by nuclear magnetic resonance. The resulting data showed that SPS is a straight-chained basic polysaccharide constructed of a pentasaccharide repeating unit.

journal_name

Int J Biol Macromol

authors

Takeda M,Nakamori T,Hatta M,Yamada H,Koizumi J

doi

10.1016/j.ijbiomac.2003.08.008

keywords:

subject

Has Abstract

pub_date

2003-12-01 00:00:00

pages

245-50

issue

4-5

eissn

0141-8130

issn

1879-0003

pii

S0141813003001107

journal_volume

33

pub_type

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