BB-norm+ner@ldeleger:BB-norm+ner-23902156
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Id | Subject | Object | Predicate | Lexical cue | NCBI_Taxonomy | OntoBiotope |
---|---|---|---|---|---|---|
T1 | 0-90 | Title | denotes | Isolation, expression and characterization of a minor allergen from Penicillium crustosum. | ||
T3 | 68-89 | Microorganism | denotes | Penicillium crustosum | 36656 | |
T2 | 91-1393 | Paragraph | denotes | A ribosomal P1 protein, Pen b 26 from Penicillium brevicompactum, was previously identified as a major allergen. A homolog protein was isolated and characterized from Penicillium crustosum which is not known to be allergenic mold. A cDNA library of P. crustosum was constructed and screened using a probe based on the DNA sequence of Pen b 26. A positive clone was isolated, expressed in Escherichia coli, purified and characterized by comparing its immunological and physical properties to Pen b 26. It was designated as Pen cr 26 and had a 321 nt ORF corresponding to 107 amino acids with a MW of 11 kDa. Pen cr 26 had strong sequence homology to Pen b 26 (92% for nucleotides and 86% for amino acids) and its physical and predicted structural properties were similar to the latter. The level of expression of Pen cr 26 was much lower than that of Pen b 26 in the same expression vector. Both proteins were recognized equally well by the IgG class specific antibodies, but Pen cr 26 was poorly recognized by Penicillium-sensitive atopic sera (IgE), suggesting striking antigenic difference in IgE epitopes, i.e., 87% were positive for Pen b 26 while only 23% were positive for Pen cr 26. The allergenicity of Pen cr 26 seems to be minor in nature and it could be a hypoallergenic variant of Pen b 26. | ||
T4 | 129-155 | Microorganism | denotes | Penicillium brevicompactum | 5074 | |
T5 | 258-279 | Microorganism | denotes | Penicillium crustosum | 36656 | |
T6 | 340-352 | Microorganism | denotes | P. crustosum | 36656 | |
T7 | 479-495 | Microorganism | denotes | Escherichia coli | 562 | |
T8 | 1101-1112 | Microorganism | denotes | Penicillium | 5073 | |
T9 | 1101-1134 | Habitat | denotes | Penicillium-sensitive atopic sera | OBT:000007 |