dionex ultimate 3000 hplc system (Thermo Fisher)
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Dionex Ultimate 3000 Hplc System, supplied by Thermo Fisher, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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Average 90 stars, based on 1 article reviews
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1) Product Images from "Recombinant production of amaranthin and other betalain variants with yeast cell factories"
Article Title: Recombinant production of amaranthin and other betalain variants with yeast cell factories
Journal: Synthetic and Systems Biotechnology
doi: 10.1016/j.synbio.2025.05.008
Figure Legend Snippet: Screening of glucuronosyltransferases in betanin-producing S. cerevisiae . a HPLC-UV chromatogram, comparing the total fraction of the parent strain ST12160 with the strains expressing Ah AmaSy1, Cq AmaSy1 or Cc AmaSy1 and the plant extract from B. glabra . A compound with an RT of 5.4 min, also present in the plant, was detected in the strains expressing Ah AmaSy1 and Cc AmaSy1. The upward arrow (↑) indicates overexpression of the gene listed after the symbol. b Extracted-ion chromatogram (XIC) and the corresponding MS 2 spectrum from the LC-MS analysis revealed that this new compound with m / z = 713.2039 is bougainvillein-r I. The product ion at m / z = 389.09, characteristic for all betacyanins, corresponds to betanidin, the product ion at m / z = 343.09 corresponds to monodecarboxylated betanidin.
Techniques Used: Expressing, Plant Extract, Over Expression, Liquid Chromatography with Mass Spectroscopy
Figure Legend Snippet: UDP-glucuronic acid synthesis in S. cerevisiae enables the production of amaranthin by glucuronosyltransferases . a Depending on the available sugar donor, betanin is glycosylated to bougainvillein-r I or amaranthin by the glucuronosyltransferases. At UGD1 converts UDP-glucose to UDP-glucuronic acid. b UDP-glucose and UDP-glucuronic acid concentrations in betalain producing S. cerevisiae without (ST12160) and with expression of a heterologous UDP-glucose dehydrogenase ( At UGD1). c HPLC analysis detects a new compound in all three strains expressing At UGD1 in combination with a glucuronosyltransferase that is also present in the plant extract from A. cruentus . LC-MS analysis confirms that this compound is amaranthin. d Betalain production in strains with or without At UGD1, quantified by HPLC. Concentrations of C15 stereoisomers were combined. Mean values of biological triplicates (±SD) are shown. “X” indicates the integration of At UGD1. e Betalain-producing S. cerevisiae strains on agar plate. At UGD1: UDP-glucose dehydrogenase ( A. thaliana ), Ah AmaSy1: Glucuronosyltransferase ( Amaranthus hypochondriacus ), Cq AmaSy1: Glucuronosyltransferase ( Chenopodium quinoa ), Cc AmaSy1: Glucuronosyltransferase ( Celosia argentea var. cristata ), Mj DOD: 4,5-extradiol dioxyge nase ( Mirabilis jalapa ), Bv TYH: tyrosine hydroxylase ( Beta vulgaris ), Bv GT2: UDP-glycosyltransferase ( Beta vulgaris ). The upward arrow (↑) indicates overexpression of the gene listed after the symbol.
Techniques Used: Expressing, Plant Extract, Liquid Chromatography with Mass Spectroscopy, Over Expression
Figure Legend Snippet: Expression of glucuronosyltransferases in betanin-producing Y. lipolytica . ST12603 and the GlcAT-expressing strains were cultivated in 24-well plates for 48 h. a Intra- and extracellular betalain concentrations, determined by HPLC. The corresponding 10x diluted samples are shown below the graph. Concentrations of the C15 stereoisomers were combined. Mean values of biological triplicates (±SD) are shown. b UDP-glucose and UDP-glucuronic acid concentrations in the yeast strains were measured by LC-MS. The upward arrow (↑) indicates overexpression of the gene listed after the symbol.
Techniques Used: Expressing, Liquid Chromatography with Mass Spectroscopy, Over Expression
Figure Legend Snippet: Celoscristatin production in S. cerevisiae and Y. lipolytica . a To synthesise malonylated amaranthin from betanin, a glucuronosyltransferase ( Ah / Cq / Cc AmaSy1) and a malonyltransferase (e.g. Hp BAHD3) are required. b HPLC chromatogram (540 nm) of the extracellular fraction of amaranthin-producing S. cerevisiae strains, additionally expressing the acyltransferase Hp BAHD3. A new compound was detected in all three strains, absent in the reference strains. Y-axis: 10 – 120 mAU. The upward arrow (↑) indicates overexpression of the gene listed after the symbol. c Expression of Hp BAHD3 and Cc AmaSy1 in betanin-producing Y. lipolytica led to the formation of the same compound. From LC-MS analysis, this new compound was identified as celoscristatin (6′-O-malonyl-amaranthin) . d Phyllocactin- (ST14103), amaranthin- (ST14102) and celoscristatin- (ST14760) producing Y. lipolytica strains were cultivated in MM and the extracellular and intracellular production analysed by HPLC. Peak areas (mAU∗min) were compared. Mean values of biological triplicates (±SD) are shown. e UV–vis spectrum of 10x diluted extracellular and total samples. The corresponding 2x and 10x diluted samples of ST14760 are shown.
Techniques Used: Expressing, Over Expression, Liquid Chromatography with Mass Spectroscopy
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