Structure of an acidic polysaccharide from the agar-decomposing marine bacterium Pseudoalteromonas atlantica strain IAM 14165 containing 5,7-diacetamido-3,5,7,9-tetradeoxy-L-glycero-L-manno-non-2-ulosonic acid.
The structure of an acidic polysaccharide from Pseudoalteromonas atlantica strain 14165 containing 5,7-diacetamido-3,5,7,9-tetradeoxy-L-glycero-L-manno-non-2-ulosonic acid (di-N-acetylpseudaminic acid, Pse5Ac7Ac) has been elucidated. The polysaccharide was studied by 1H and 13C NMR spectroscopy, including 2D experiments, along with sugar and methylation analyses. After a selective hydrolysis a modified polysaccharide devoid of its side chain could be isolated. It was found that the polysaccharide has pentasaccharide repeating units with following structure: [structure: see text].
Perepelov
Andrei V
AV
Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, S-106 91 Stockholm, Sweden.
Shashkov
Alexander S
AS
Torgov
Vladimir I
VI
Nazarenko
Evgeny L
EL
Gorshkova
Raisa P
RP
Ivanova
Elena P
EP
Gorshkova
Natalya M
NM
Widmalm
Göran
G
D000362:Agar / Q000378:metabolism*; D002240:Carbohydrate Sequence; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D011135:Polysaccharides, Bacterial / Q000737:chemistry*; D031161:Pseudoalteromonas / Q000737:chemistry* / Q000145:classification* / Q000378:metabolism; D012794:Sialic Acids / Q000032:analysis* / Q000737:chemistry
C502287:5,7-diacetamido-3,5,7,9-tetradeoxynon-2-ulosonic acid; D011135:Polysaccharides, Bacterial; D012794:Sialic Acids; D000362:Agar