High-resolution nuclear magnetic resonance measurements in inhomogeneous magnetic fields: A fast two-dimensional J-resolved experiment

2016 ◽  
Vol 144 (10) ◽  
pp. 104202 ◽  
Author(s):  
Yuqing Huang ◽  
Yung-Ya Lin ◽  
Shuhui Cai ◽  
Yu Yang ◽  
Huijun Sun ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Magnetic Fields ◽  
Two Dimensional ◽  
Nuclear Magnetic

The structure of the antigenic lipopolysaccharide O-chain produced by Escherichiahermannii ATCC 33650 and 33652

1990 ◽  
Vol 68 (8) ◽  
pp. 1456-1466 ◽  
Author(s):  
Linda M. Beynon ◽  
David R. Bundle ◽  
Malcolm B. Perry
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
High Resolution ◽  
Molecular Modelling ◽  
Partial Hydrolysis ◽  
Two Dimensional ◽  
Methylation Analysis ◽  
Structure Formula ◽  
Structural Methods ◽  
Nuclear Magnetic

High resolution two-dimensional 1H and 13C nuclear magnetic resonance at 500 MHz was used in combination with molecular modelling to solve the structures of the antigenic O-polysaccharides produced by Escherichiahermannii strains ATCC 33650 and 33652. Classical structural methods such as methylation analysis, selective and partial hydrolysis, and periodate oxidations confirmed that the O-polysaccharides had a branched tetrasaccharide repeating unit with the structure:[Formula: see text]Keywords: Escherichiahermannii, lipopolysaccharide, magnetic resonance, polysaccharide.

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