solanum tripartitum/tyrosine

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Multi-targeted tyrosine kinase inhibitors for the treatment of non-small cell lung cancer: an era of individualized therapy.

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Multi-targeted tyrosine kinase inhibitors (TKIs) have played an increasingly important role in the treatment of non-small cell lung cancer (NSCLC). Many recently published phase III trials have shown bittersweet efficacies of these drugs. How to optimize the efficacies of TKIs has been a hot topic

In vitro screening for protein tyrosine phosphatase 1B and dipeptidyl peptidase IV inhibitors from selected Nigerian medicinal plants.

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OBJECTIVE Protein tyrosine phosphatase 1B (PTP 1B) and dipeptidyl peptidase IV (DPP IV) have been identified as one of the drug targets for the treatment of Type-2 diabetes. This study was designed to screen for PTP 1B and DPP-IV inhibitors from some Nigerian medicinal plants. METHODS PTP 1B and

Studies on enzymic browning of potatoes (Solanum tuberosum). IV. Relationship between tyrosine turnover and rate of browning.

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Using analytical data from the literature the tyrosine turnover was calculated by a method published previously by us for 72 potato samples with different rates of browning. The samples included 9 varieties grown at three locations in 1969, which were analysed after harvest and after different times

Cloning, characterization, and bacterial over-expression of an osmotin-like protein gene from Solanum nigrum L. with antifungal activity against three necrotrophic fungi.

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A new osmotin-like protein gene from Solanum nigrum L. var indica (SindOLP) was cloned and overexpressed in Escherichia coli. The full-length intron-less gene is 744 bp, encoding a mature protein of 247 amino acids with a molecular mass of 26 kDa. The protein has an N-terminal cleavable signal

Ralstonia solanacearum induces soluble amine-oxidase activity in Solanum torvum stem calli.

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Solanum torvum is reported to carry resistance to bacterial wilt caused by Ralstonia solanacearum. So, this wild species is used as rootskock for eggplants or tomatoes in naturally infected soil. This study aimed to investigate the involvement of the polyamine metabolism pathway in the resistance

Evidence of parietal amine oxidase activity in Solanum torvum Sw. stem calli after Ralstonia solanacearum inoculation.

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Calli induced from Solanum torvum stem explants were inoculated with Ralstonia solanacearum under partial vacuum. All calli showed a hypersensitive response after infiltration. Furthermore, amine oxidase activity with aldehyde and H(2)O(2) production was detected in semi-purified cell walls of calli

A root-expressed L-phenylalanine:4-hydroxyphenylpyruvate aminotransferase is required for tropane alkaloid biosynthesis in Atropa belladonna.

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The tropane alkaloids, hyoscyamine and scopolamine, are medicinal compounds that are the active components of several therapeutics. Hyoscyamine and scopolamine are synthesized in the roots of specific genera of the Solanaceae in a multistep pathway that is only partially elucidated. To facilitate

[Current status and future direction of multi-targeted drugs in the era of personalized therapy--overview of advances in multi-targeted therapy in non-small cell lung cancer].

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Multi-targeted tyrosine kinase inhibitors (TKIs) play important roles in the treatment of non-small cell lung cancer (NSCLC). Recently, results of several large phase III studies have been published, showing bittersweet efficacy of multi-targeted TKIs. In the era of personalized therapy, optimal use

Impact of ploidy change on secondary metabolites and photochemical efficiency in Solanum bulbocastanum.

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Plants are well known for producing a wide diversity of natural compounds and several strategies have been proposed to enhance their production. Among them, somatic chromosome doubling may represent an effective and inexpensive method. The objective of the current study was to investigate the effect

Studies on enzymic browning of potatoes (Solanum tuberosum). III. Kinetics of potato phenoloxidase (EC 1.14.18.1 monophenol, dihydroxyphenylalanine: oxygen-oxidoreductase).

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From initial velocity studies a sequential mechanism for the reactions catalysed by phenoloxidase from potatoes is indicated. The data are in accordance with an ordered addition of oxygen and phenolic substrate to the enzyme, with oxygen being the first substrate bound at thermodynamic equilibrium.

[Studies on enzymic browning of potatoes (Solanum tuberosum). I. Phenoloxidases and phenolic compounds from different varieties (author's transl)].

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31 samples of potato varieties with slow, medium and fast rates of browning were studies. Characteristic enzyme patterns were obtained from polyacrylamide gel electrophoresic of the phenoloxidases of varieties with different discolouration rates. The differences lie mainly in the intensities of the

[Studies on enzymic browning of potatoes (Solanum tuberosum). II. The quantitative relationship between browning and its causative factors (author's transl)].

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Ten potato varieties, with different rates of browning, were analyzed quantitatively for phenoloxidase, tyrosine, chlorogenic acid, caffeic acid, and for reducing substances (ascorbic acid). The rate of tyrosine turnover was calculated from the data. The fact that the further reactions of the

Beta-1,3-glucooligosaccharide induced activation of four enzymes responsible for N-p-coumaroyloctopamine biosynthesis in potato (Solanum tuberosum cv.) tuber tissue.

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Potato tuber disks, when treated with laminarin, a beta-1,3-glucooligosaccharide from Laminaria digitata, accumulate a hydroxycinnamoyl amide compound, N-p-coumaroyloctopamine (p-CO). The biosynthesis of p-CO was investigated by feeding experiments, in order to show that the precursors of

Studies on the chemical modification and potato (Solanum tuberosum) lectin and its effect on haemagglutinating activity.

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1. Modification of potato (Solanum tuberosum) lectin with acetic anhydride blocked 5.1 amino and 2.7 tyrosyl groups per molecule of lectin and decreased the haemagglutinating activity of the lectin. De-O-acetylation regenerated 2.0 of the tyrosyl groups and resulted in a recovery of activity. 2.

Differential Activities of Chorismate Mutase Isozymes in Tubers and Leaves of Solanum tuberosum L.

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Chromatography on DEAE cellulose equilibrated with Pipes buffer resolved three forms of chorismate mutase (CM) from tubers and leaves of Solanum tuberosum: CM-1A and CM-1B were activated by tryptophan and inhibited by phenylalanine and tyrosine; CM-2 was unaffected by these aromatic amino acids.

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