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Studies on lipid A isolated from Phyllobacterium trifolii PETP02T lipopolysaccharide
Ist Teil von
Antonie van Leeuwenhoek, 2017-11, Vol.110 (11), p.1413-1433
Ort / Verlag
Cham: Springer International Publishing
Erscheinungsjahr
2017
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
The structure of lipid A from lipopolysaccharide of
Phyllobacterium trifolii
PETP02
T
, a nitrogen-fixing symbiotic bacterium, was studied. It was found that the lipid A backbone was composed of two 2,3-diamino-2,3-dideoxy-
d
-glucose (Glc
p
N3N) residues connected by a β-(1 → 6) glycosidic linkage, substituted by galacturonic acid (Gal
p
A) at position C-1 and partly decorated by a phosphate residue at C-4′ of the non-reducing Glc
p
N3N. Both diaminosugars were symmetrically substituted by 3-hydroxy fatty acids (14:0(3-OH) and 16:0(3-OH)). Ester-linked secondary acyl residues [i.e. 19:0cyc and 28:0(27-OH) or 28:0(27-4:0(3-OMe))] were located in the distal part of lipid A. A high similarity between the lipid A of
P. trifolii
and
Mesorhizobium
was observed and discussed from the perspective of the genetic context of both genomes.