BB-norm@ldeleger:BB-norm-11395453 / 70-1079 JSONTXT

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bionlp-ost-19-BB-norm-test

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Id Subject Object Predicate Lexical cue
T2 0-1009 Paragraph denotes The luxS gene of quorum-sensing Vibrio harveyi is required for type 2 autoinducer production. We identified a Porphyromonas gingivalis open reading frame encoding a predicted peptide of 161 aa that shares 29% identity with the amino acid sequence of the LuxS protein of V. harveyi. Conditioned medium from a late-log-phase P. gingivalis culture induced the luciferase operon of V. harveyi, but that from a luxS insertional mutant did not. In P. gingivalis, the expression of luxS mRNA was environmentally controlled and varied according to the cell density and the osmolarity of the culture medium. In addition, differential display PCR showed that the inactivation of P. gingivalis luxS resulted in up-regulation of a hemin acquisition protein and an arginine-specific protease and reduced expression of a hemin-regulated protein, a TonB homologue, and an excinuclease. The data suggest that the luxS gene in P. gingivalis may function to control the expression of genes involved in the acquisition of hemin.
T4 17-31 Phenotype denotes quorum-sensing
T5 32-46 Microorganism denotes Vibrio harveyi
T6 110-134 Microorganism denotes Porphyromonas gingivalis
T7 270-280 Microorganism denotes V. harveyi
T8 282-344 Habitat denotes Conditioned medium from a late-log-phase P. gingivalis culture
T9 323-336 Microorganism denotes P. gingivalis
T10 378-388 Microorganism denotes V. harveyi
T11 406-429 Phenotype denotes luxS insertional mutant
T12 442-455 Microorganism denotes P. gingivalis
T13 583-597 Habitat denotes culture medium
T14 669-682 Microorganism denotes P. gingivalis
T15 910-923 Microorganism denotes P. gingivalis