Linked Life Data

12042247

Source:http://linkedlifedata.com/resource/pubmed/id/12042247

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2002-6-3
pubmed:abstractText
Organ hyperacute rejection, a phenomenon occurring during discordant xenotransplantation, is due to the recognition of an oligosaccharide epitope by human xenoreactive natural antibodies. In addition to the alpha Gal(1-3)beta Gal(1-4)GlcNAc trisaccharide, a fucosylated structure, alpha Gal-Lewis X, has been shown to be recognized by the antibodies. Both the trisaccharide and the tetrasaccharide have been synthesized by chemical methods. A complete nuclear magnetic resonance characterization of the two compounds has been performed, including the measurements of two-dimensional nuclear Overhauser effect spectroscopy data. Molecular dynamics simulations were run for several ns in the presence of explicit water molecules. The combination of experimental and theoretical approaches revealed the effect of an additional fucose residue on the conformational behavior of the xenoantigen. This branched fucose strongly rigidifies the N-acetyllactosamine. The effect on the alpha Gal(1-3)Gal fragment is less marked. In the presence of fucose, the terminal alpha Gal residue can still adopt two different conformations, but the equilibrium populations are modified.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0959-6658
pubmed:author
pubmed:issnType
Print
pubmed:volume
12
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
241-50
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2002
pubmed:articleTitle
Solution structure of two xenoantigens: alpha Gal-LacNAc and alpha Gal-Lewis X.
pubmed:affiliation
Centre de Recherche sur les Macromolécules Végétales, Joseph Fourier University, BP 53, F-38041 Grenoble cedex 9, France.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't