hypersensitivity/prolina

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Isolation of a proline-rich mycobacterial protein eliciting delayed-type hypersensitivity reactions only in guinea pigs immunized with living mycobacteria.

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Effective protection against a virulent challenge with Mycobacterium tuberculosis is induced only by a previous immunization with living attenuated mycobacteria, usually bacillus Calmette-Guérin (BCG). Living and killed bacteria share a number of common antigens. To identify and to purify molecules

The use of proline as a nitrogen source causes hypersensitivity to, and allows more economical use of 5FOA in Saccharomyces cerevisiae.

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The use of proline as a nitrogen source causes hypersensitivity to 5-fluoro-orotic acid (5FOA) and allows up to 40-fold less of this drug to be used to select for the loss of URA3 function in Saccharomyces cerevisiae. 5FOA hypersensitivity is presumably due to the absence of nitrogen catabolite

Hypersensitivity of an Arabidopsis sugar signaling mutant toward exogenous proline application.

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In transgenic Arabidopsis a patatin class I promoter from potato is regulated by sugars and proline (Pro), thus integrating signals derived from carbon and nitrogen metabolism. In both cases a signaling cascade involving protein phosphatases is involved in induction. Other endogenous genes are also

Hypersensitivity of an Arabidopsis sugar signaling mutant toward exogenous proline application.

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Expression and regulation of small proline-rich protein 2 in allergic inflammation.

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Asthma is a complex inflammatory pulmonary disorder that is on the rise despite intense ongoing research. We aimed to elucidate novel pathways involved in the pathogenesis of asthma. Employing asthma models induced by different allergens (ovalbumin and Aspergillus fumigatus), we uncovered the

Altered levels of proline dehydrogenase cause hypersensitivity to proline and its analogs in Arabidopsis.

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Pro dehydrogenase (PDH) catalyzes the first and rate-limiting step in the Pro catabolic pathway. In Arabidopsis, this enzyme is encoded by At-PDH. To investigate the role of Pro catabolism in plants, we generated transgenic Arabidopsis plants with altered levels of PDH by sense (PDH-S plants) and

Cyclophilin A regulates TCR signal strength in CD4+ T cells via a proline-directed conformational switch in Itk.

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Cyclophilin A (CypA/Ppia) is a peptidyl-prolyl isomerase (PPIase) that binds the immunosuppressive drug cyclosporine. The resulting complex blocks T cell function by inhibiting the calcium-dependent phosphatase calcineurin. To identify the native function of CypA, long suspected of regulating signal

DFR1-Mediated Inhibition of Proline Degradation Pathway Regulates Drought and Freezing Tolerance in Arabidopsis.

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Proline accumulation is one of the most important adaptation mechanisms for plants to cope with environmental stresses, such as drought and freezing. However, the molecular mechanism of proline homeostasis under these stresses is largely unknown. Here, we identified a mitochondrial protein, DFR1,

Toxicity of free proline revealed in an arabidopsis T-DNA-tagged mutant deficient in proline dehydrogenase.

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The toxicity of proline (Pro) to plant growth has raised questions despite its protective functions in response to environmental stresses. To evaluate Pro toxicity, we isolated an Arabidopsis T-DNA-tagged mutant, pdh, that had a defect in Pro dehydrogenase (AtProDH), which catalyzes the first step

Colostrinin decreases hypersensitivity and allergic responses to common allergens.

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BACKGROUND Colostrinin (CLN), isolated from mothers' pre-milk fluid (colostrum), is a uniform mixture of low-molecular-weight, proline-rich polypeptides. CLN induces neurite outgrowth of pheochromocytoma cells, extends the lifespan of diploid fibroblast cells, inhibits beta-amyloid-induced apoptosis

A mutation in yeast topoisomerase II that confers hypersensitivity to multiple classes of topoisomerase II poisons.

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A mutation was constructed in the CAP homology domain of yeast topoisomerase II that resulted in hypersensitivity to the intercalating agent N-[4-(9-acridinylamino)-3-methoxy-phenyl]methanesulfonamide and the fluoroquinolone 6, 8-difluoro-7-(4'-hydroxyphenyl)-1-cyclopropyl-4-quinolone-3-carboxyli c

MTC28, a novel 28-kilodalton proline-rich secreted antigen specific for the Mycobacterium tuberculosis complex.

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Proteins that are actively secreted by Mycobacterium tuberculosis serve as major targets of immune responses in the infected host. To identify and purify novel proteins in the filtrates of M. tuberculosis cultures, a bacteriophage lambda library of M. tuberculosis H37Rv DNA was immunoscreened by

Safety of proline-specific oligopeptidase as a novel food pursuant to Regulation (EC) No 258/97

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Following a request from the European Commission, the EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA) was asked to deliver an opinion on proline-specific oligopeptidase (Tolerasep>®p> G) as a novel food ingredient submitted pursuant to Regulation (EC) No 258/97 of the European

Effects of proline mutations in the major house dust mite allergen Der f 2 on IgE-binding and histamine-releasing activity.

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Der f 2 is the major group 2 allergen from house dust mite Dermatophagoides farinae and is composed of 129 amino-acid residues. Wild-type and six proline mutants of Der f 2 (P26A, P34A, P66A, P79A, P95A, and P99A) expressed in Escherichia coli were refolded and purified. Formations of intramolecular

CBL mutations in myeloproliferative neoplasms are also found in the gene's proline-rich domain and in patients with the V617FJAK2.

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BACKGROUND Despite the discovery of the p.V617F in JAK2, the molecular pathogenesis of some chronic myeloproliferative neoplasms remains unclear. Although very rare, different studies have identified CBL (Cas-Br-Murine ecotropic retroviral transforming sequence) mutations in V617FJAK2-negative

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