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Finally, using the [sup.13]C experimental procedure, we were able to measure metabolites, notably proline and uridine (Figure 2), that would have been otherwise difficult for concentration fit, because they have [sup.1]H NMR spectral peaks that are masked by other larger peaks.
In general, PIWI and AUB show preference for sequences with a 5' Uridine bias mapping antisense to transposons, whereas AGO3 prefers sequences with adenine at the 10th position, mapping sense to transposons [115].
Furthermore, peaks 4, 7, 8, 9, and 10 were identified as uracil, uridine, adenine, guanosine, and adenosine, respectively.
Standard substance of cordycepin, adenosine, guanosine and uridine purchased from Shanghai Aladdin Bio-Chem Technology Co., Ltd.
(21) Although it has relatively low bioavailability [13], uridine is reportedly the most abundant salvageable pyrimidine nucleoside in vivo [13, 14].
Whitington et al., "Genetic predisposition to the metabolism of irinotecan (CPT-11): role of uridine diphosphate glucuronosyltransferase isoform 1A1 in the glucuronidation of its active metabolite (SN-38) in human liver microsomes," The Journal of Clinical Investigation, vol.
Choline, a pyrimidine (uridine), and polyunsaturated fatty acids (PUFAs) (DHA, docosahexaenoic acid) are three precursors required for optimal stimulation of PC synthesis via the CDP-choline pathway.
A mixed standard stock solution containing uridine, inosine, guanosine, safflomin A, and brazilin was prepared in MeOH/[H.sub.2]O (50: 50, v/v).
UDPs, which correspond to both uridine 5'-diphospho-N-acetylglucosamine (UDP-GlcNAc) and uridine 5'-diphospho-N-acetylgalactosamine (UDP-GalNAc), are nucleotide sugar precursor molecules in lipid glycosylation and in polypeptide biosynthetic pathways.
Canagliflozin is primarily metabolized via glucuronidation by the uridine 5'-diphosphoglucuronosyltransferase (UGT) enzymes.
Uridine (Xuriden) is a pyrimidine analog for uridine replacement.
The in vitro WEL glucuronidation activities of human liver microsomes, human kidney microsomes, human intestine microsomes, and 12 recombinant human uridine diphosphate-glucuronosyltransferase (UGT) isoforms were screened.