BB-norm+ner@ldeleger:BB-norm+ner-21498521 JSONTXT

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bionlp-ost-19-BB-norm-ner-train

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Id Subject Object Predicate Lexical cue NCBI_Taxonomy OntoBiotope
T1 0-105 Title denotes The lipid A from Vibrio fischeri lipopolysaccharide: a unique structure bearing a phosphoglycerol moiety.
T2 106-1786 Paragraph denotes Vibrio fischeri, a bioluminescent marine bacterium, exists in an exclusive symbiotic relationship with the Hawaiian bobtail squid, Euprymna scolopes, whose light organ it colonizes. Previously, it has been shown that the lipopolysaccharide (LPS) or free lipid A of V. fischeri can trigger morphological changes in the juvenile squid's light organ that occur upon colonization. To investigate the structural features that might be responsible for this phenomenon, the lipid A from V. fischeri ES114 LPS was isolated and characterized by multistage mass spectrometry (MS(n)). A microheterogeneous mixture of mono- and diphosphorylated diglucosamine disaccharides was observed with variable states of acylation ranging from tetra- to octaacylated forms. All lipid A species, however, contained a set of conserved primary acyl chains consisting of an N-linked C14:0(3-OH) at the 2-position, an unusual N-linked C14:1(3-OH) at the 2'-position, and two O-linked C12:0(3-OH) fatty acids at the 3- and 3'-positions. The fatty acids found in secondary acylation were considerably more variable, with either a C12:0 or C16:1 at the 2-position, C14:0 or C14:0(3-OH) at the 2'-position, and C12:0 or no substituent at the 3'-position. Most surprising was the presence of an unusual set of modifications at the secondary acylation site of the 3-position consisting of phosphoglycerol (GroP), lysophosphatidic acid (GroP bearing C12:0, C16:0, or C16:1), or phosphatidic acid (GroP bearing either C16:0 + C12:0 or C16:0 + C16:1). Given their unusual nature, it is possible that these features of the V. fischeri lipid A may underlie the ability of E. scolopes to recognize its symbiotic partner.
T3 17-32 Microorganism denotes Vibrio fischeri 668
T4 106-121 Microorganism denotes Vibrio fischeri 668
T5 125-139 Phenotype denotes bioluminescent OBT:000055
T6 140-146 Habitat denotes marine OBT:000338
T7 171-203 Phenotype denotes exclusive symbiotic relationship OBT:003183
T8 213-235 Habitat denotes Hawaiian bobtail squid OBT:003123
T9 237-254 Habitat denotes Euprymna scolopes OBT:003123
T10 262-273 Habitat denotes light organ OBT:000708
T11 371-382 Microorganism denotes V. fischeri 668
T12 424-452 Habitat denotes juvenile squid's light organ OBT:000708
T13 424-438 Habitat denotes juvenile squid OBT:003123|OBT:001849
T14 586-603 Microorganism denotes V. fischeri ES114 312309
T15 682-766 Habitat denotes microheterogeneous mixture of mono- and diphosphorylated diglucosamine disaccharides OBT:000007
T16 1691-1702 Microorganism denotes V. fischeri 668
T17 1739-1750 Habitat denotes E. scolopes OBT:003123
T18 1768-1777 Phenotype denotes symbiotic OBT:003183