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排序方式: 共有159条查询结果,搜索用时 31 毫秒
1.
Wheat (moisture content: 26%) was autoclaved or left untreated, inoculated with conidia ofPenicillium viridicatum and stored at 10°C. The fungus grew on both substrates and was the dominant mould on the non-autoclaved grain. Autoclaving resulted in an earlier onset of ergosterol, ochratoxin A, and citrinin production due to accelerated mould growth. Yield of ochratoxin A increased while citrinin slightly decreased in autoclaved wheat. 相似文献
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Dr. Hans-Martin Müller 《Planta》1961,56(5):555-574
Ohne ZusammenfassungMit 10 Textabbildungen 相似文献
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The characterization of protein expression patterns by two-dimensional gel electrophoresis depends on efficient and reliable identification strategies for target spots. In addition to sophisticated techniques, such as microsequencing and peptide mass spectrometry, immunodetection of membrane-immobilized proteins is a valuable method with which to identify the corresponding spots for a given set of candidate proteins. To precisely assign immunoreactive spots, this approach requires specific immunodetection and staining of total protein to be performed on the same membrane. Here, we describe a highly sensitive, colloidal silver-based method for the assignment of immunoreactive spots in two-dimensional protein patterns. This simple and rapid procedure involves a destaining step after staining of nitrocellulose-bound proteins with colloidal silver. We show that destaining of proteins is a prerequisite for subsequent immunodetection using enhanced chemiluminescence. Several types of antibodies were successfully employed for antigen detection after the staining-destaining procedure. Our results demonstrate that the colloidal silver-based method is generally applicable for the unambiguous identification of candidate proteins in complex two-dimensional patterns. 相似文献
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Mielenz D Vettermann C Hampel M Lang C Avramidou A Karas M Jäck HM 《Journal of immunology (Baltimore, Md. : 1950)》2005,174(6):3508-3517
Lipid rafts serve as platforms for BCR signal transduction. To better define the molecular basis of these membrane microdomains, we used two-dimensional gel electrophoresis and mass spectrometry to characterize lipid raft proteins from mature as well as immature B cell lines. Of 51 specific raft proteins, we identified a total of 18 proteins by peptide mass fingerprinting. Among them, we found vacuolar ATPase subunits alpha-1 and beta-2, vimentin, gamma-actin, mitofilin, and prohibitin. None of these has previously been reported in lipid rafts of B cells. The differential raft association of three proteins, including a novel potential signaling molecule designated swiprosin-1, correlated with the stage-specific sensitivity of B cells to BCR-induced apoptosis. In addition, MHC class II molecules were detected in lipid rafts of mature, but not immature B cells. This intriguing finding points to a role for lipid rafts in regulating Ag presentation during B cell maturation. Finally, a fraction of the BCR in the B cell line CH27 was constitutively present in lipid rafts. Surprisingly, this fraction was neither expressed at the cell surface nor fully O-glycosylated. Thus, we conclude that partitioning the BCR into lipid rafts occurs in the endoplasmic reticulum/cis-Golgi compartment and may represent a control mechanism for surface transport. 相似文献
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Fabian Krauth Hans-Martin Dahse Hans-Hermann Rüttinger Petra Frohberg 《Bioorganic & medicinal chemistry》2010,18(5):1816-1821
A series of novel small molecules with a 1,2,4-triazine scaffold was obtained according to a recently published and highly efficient synthetic route. Screening for antiproliferative and cytotoxic activity revealed distinct anticancer effects against the human leukemia cell line K-562 combined with a remarkable low cytotoxicity. All compounds were in agreement with the ‘rule-of-five’ claims by Lipinski and calculated log Pcalc values were experimentally confirmed (log Pexp). For the most active compounds, in vitro serum albumin binding was investigated and structure–activity relationships were established. 相似文献