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Puslapis 1 nuo 24 rezultatus
Activated Cross-linked Agarose for the Rapid Development of Affinity Chromatography Resins - Antibody Capture as a Case Study.
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The purification of monoclonal antibodies (mAbs) is commonly achieved by Protein A affinity chromatography, which can account for up to 25% of the overall process costs. Alternative, cost-effective capture steps are therefore valuable for industrial-scale manufacturing, where large quantities of a
Improved sensitivity for high resolution in situ hybridization using resin extraction of methyl methacrylate embedded material.
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An in situ hybridization procedure resulting in both high resolution and sensitivity was established by using the removable methyl methacrylate resin, Technovit 9100. Young bicellular pollen of tobacco (Nicotiana tabacum L. SR-1) was embedded in Technovit 9100 resin and sectioned. The resin was
Simultaneous analysis of apolar phytohormones and 1-aminocyclopropan-1-carboxylic acid by high performance liquid chromatography/electrospray negative ion tandem mass spectrometry via 9-fluorenylmethoxycarbonyl chloride derivatization.
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A strategy to detect and quantify the polar ethylene precursor 1-aminocyclopropan-1-carboxylic acid (ACC) along with the more apolar phytohormones abscisic acid (ABA), indole-3-acetic acid (IAA), jasmonic acid (JA), jasmonic acid-isoleucine conjugate (JA-Ile), 12-oxo-phytodienoic acid (OPDA),
Comparison of microbial and transient expression (tobacco plants and plant-cell packs) for the production and purification of the anticancer mistletoe lectin viscumin.
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Cancer is the leading cause of death in industrialized countries. Cancer therapy often involves monoclonal antibodies or small-molecule drugs, but carbohydrate-binding lectins such as mistletoe (Viscum album) viscumin offer a potential alternative treatment strategy. Viscumin is toxic in mammalian
The soybean GH2/4 gene that encodes a glutathione S-transferase has a promoter that is activated by a wide range of chemical agents.
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Transcriptional activation of the soybean (Glycine max) GH2/4 gene (also referred to as Gmhsp26-A) and increase in abundance of the GH2/4 mRNA (also referred to as pCE54) have been previously shown to occur following treatment of soybean seedlings with auxins, nonauxin analogs, heavy metals, and a
Light activation of ribulose bisphosphate carboxylase: purification and properties of the enzyme in tobacco.
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The development of methods of preparation of long wavelength ultraviolet light capable of activating ribulose bisphosphate carboxylase is reported. This preparation was obtained from tobacco (Nicotiana tabacum) leaves which had reached about one-half maximum leaf weight. It was prepared at low ionic
Recombinant expression and characterization of N-acetylglucosaminyltransferase I derived from Nicotiana tabacum.
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The C-terminal catalytic domain of tobacco N-acetylglucosaminyltransferase I fused to maltose-binding protein was produced in Escherichia coli as a soluble form with significant activity. The protein was affinity-purified using amylose resin, and its enzymatic properties were investigated, including
Monoclonal Antibody Purification (Nicotiana benthamiana Plants).
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Plant-based expression systems provide an alternative biomanufacturing platform for recombinant proteins (Matoba et al., 2011). In particular, plant virus-based vectors can overexpress proteins within days in the leaf tissue of Nicotiana benthamiana (N. benthamiana). To overcome the issues of
Production of Recombinant Cholera Toxin B Subunit in Nicotiana benthamiana Using GENEWARE® Tobacco Mosaic Virus Vector.
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Here, we describe a method to produce a recombinant cholera toxin B subunit in Nicotiana benthamiana plants (CTBp) using the GENEWARE(®) tobacco mosaic virus vector system. Infectious transcripts of the vector RNA are generated in vitro and inoculated on N. benthamiana seedlings. After 11 days, CTBp
Potato Virus Y HCPro Suppression of Antiviral Silencing in Nicotiana benthamiana Plants Correlates with Its Ability To Bind In Vivo to 21- and 22-Nucleotide Small RNAs of Viral Sequence.
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We have investigated short and small RNAs (sRNAs) that were bound to a biologically active hexahistidine-tagged Potato virus Y (PVY) HCPro suppressor of silencing, expressed from a heterologous virus vector in Nicotiana benthamiana plants, and purified under nondenaturing conditions. We found that
Effect of mechanical extraction parameters on the yield and quality of tobacco (Nicotiana tabacum L.) seed oil.
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The aim of this study was to investigate how the combination of extraction parameters, such as extraction temperature seeds preheating and screw rotation speed, influenced the yield and chemical quality of tobacco seed oil (TSO). For its peculiar properties, TSO can be used for several purposes, as
Expression of Aspergillus nidulans phy gene in Nicotiana benthamiana produces active phytase with broad specificities.
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A full-length phytase gene (phy) of Aspergillus nidulans was amplified from the cDNA library by polymerase chain reaction (PCR), and it was introduced into a bacterial expression vector, pET-28a. The recombinant protein (rPhy-E, 56 kDa) was overexpressed in the insoluble fraction of Escherichia coli
Product enhancement and recovery from transformed root cultures of Nicotiana glauca.
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Transformed roots of Nicotiana glauce synthesize the alkaloids nicotine and anabasine at levels reflecting the parent plants. Media composition, strength, and pH were evaluated with respect to biomass yield and productivity. Full-strength Gamborg's B5 medium proved the best for biomass yield while
Crystalline ribulose bisphosphate carboxylase/oxygenase of high integrity and catalytic activity from Nicotiana tabacum.
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Crystalline tobacco (Nicotiana tabacum L.) ribulose-1,5-bisphosphate carboxylase/oxygenase (EC 4.1.1.39) was prepared using a procedure which protected the enzyme from hydrolysis by endogenous proteases. Leaves were extracted in a buffered medium containing casein, leupeptin, and high concentrations
The rat ErbB2 tyrosine kinase receptor produced in plants is immunogenic in mice and confers protective immunity against ErbB2(+) mammary cancer.
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The rat ErbB2 (rErbB2) protein is a 185-kDa glycoprotein belonging to the epidermal growth factor-related proteins (ErbB) of receptor tyrosine kinases. Overexpression and mutations of ErbB proteins lead to several malignancies including breast, lung, pancreatic, bladder and ovary carcinomas. ErbB2
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