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S-Alk(en)ylcysteine sulfoxides in the genus Allium: proposed biosynthesis, chemical conversion, and bioactivities.
Yoshimoto N, Saito K. Yoshimoto N, et al. J Exp Bot. 2019 Aug 19;70(16):4123-4137. doi: 10.1093/jxb/erz243. J Exp Bot. 2019. PMID: 31106832 Review.
S-Alk(en)ylcysteine sulfoxides are sulfur-containing natural products characteristic of the genus Allium. Both the flavor and medicinal properties of Allium plants are attributed to a wide variety of sulfur-containing compounds that are generated from S-alk(en)ylcys …
S-Alk(en)ylcysteine sulfoxides are sulfur-containing natural products characteristic of the genus Allium. Both the flavor and medicin …
Microbial catabolism of sterols: focus on the enzymes that transform the sterol 3beta-hydroxy-5-en into 3-keto-4-en.
Kreit J. Kreit J. FEMS Microbiol Lett. 2017 Feb 1;364(3). doi: 10.1093/femsle/fnx007. FEMS Microbiol Lett. 2017. PMID: 28087615 Review.
An overview on the microbial sterol catabolism is described with a focus on the catabolic step of the 3beta-hydroxy-5-en structure. Cholesterol oxidase transforms this structure into the corresponding 3-keto-4-en feature, and thus initiates the sterol molecule catab …
An overview on the microbial sterol catabolism is described with a focus on the catabolic step of the 3beta-hydroxy-5-en structure. C …
Analysis of car-3-en-5-hydroperoxide.
Lehnert N, Krings U, Berger RG. Lehnert N, et al. Nat Prod Commun. 2011 Sep;6(9):1217-20. Nat Prod Commun. 2011. PMID: 21941881
TLC spots were eluted and re-analyzed using cool on-column injection, but only tailing peaks showing a mixed mass spectrum of car-3-en-5-ol/one were obtained. An unequivocal identification of car-3-en-5-hydroperoxides was achieved only after using APCI(+)-LC-MS. Upo …
TLC spots were eluted and re-analyzed using cool on-column injection, but only tailing peaks showing a mixed mass spectrum of car-3-en …
S-alk(en)yl-L-cysteine sulfoxides, alliinase and aroma in Leucocoryne.
Lancaster JE, Shaw ML, Walton EF. Lancaster JE, et al. Phytochemistry. 2000 Sep;55(2):127-30. doi: 10.1016/s0031-9422(00)00245-4. Phytochemistry. 2000. PMID: 11065288
Levels of S-alk(en)yl-L-cysteine sulfoxides, alliinase and enzymatically generated pyruvic acid were determined in the bulb, leaf and scape of five species and a natural hybrid of Leucocoryne (Liliaceae), a genus of ornamental geophytes indigenous to Chile. (+)-S-Methyl-L- …
Levels of S-alk(en)yl-L-cysteine sulfoxides, alliinase and enzymatically generated pyruvic acid were determined in the bulb, leaf and …
Conversion of 7-alpha,12-alpha-dihydroxycholest-4-en-3-one to 5-alpha-cholestane-3-alpha, 7-alpha,12-alpha-triol by iguana liver microsomes.
Hoshita T, Shefer S, Mosbach EH. Hoshita T, et al. J Lipid Res. 1968 Mar;9(2):237-43. J Lipid Res. 1968. PMID: 5640503 Free article.
The role of 7alpha,12alpha-dihydroxycholest-4-en-3-one as an intermediate in the formation of 5alpha-bile acids from cholesterol was investigated with liver preparations of Iguana iguana in vitro. ...It is suggested that 7alpha,12alpha-dihydroxycholest-4-en-3-one ma …
The role of 7alpha,12alpha-dihydroxycholest-4-en-3-one as an intermediate in the formation of 5alpha-bile acids from cholesterol was …
Cytochrome P-450scc-catalyzed production of progesterone from 22R-hydroxycholest-4-en-3-one by way of 20,22-dihydroxycholest-4-en-3-one.
Sugano S, Morishima N, Horie S. Sugano S, et al. J Steroid Biochem Mol Biol. 1990 Sep;37(1):47-55. doi: 10.1016/0960-0760(90)90371-q. J Steroid Biochem Mol Biol. 1990. PMID: 2242352
The apparent Km for 22R-hydroxycholesterol was about 20 microM and those for 22R-hydroxycholest-4-en-3-one and 20,22-dihydroxycholest-4-en-3-one were 50 and 40 microM, respectively. Thus, 22R-hydroxycholest-4-en-3-one was efficiently metabolized to progestero …
The apparent Km for 22R-hydroxycholesterol was about 20 microM and those for 22R-hydroxycholest-4-en-3-one and 20,22-dihydroxycholest …
Role of Ectonucleotidases in Synapse Formation During Brain Development: Physiological and Pathological Implications.
Grković I, Drakulić D, Martinović J, Mitrović N. Grković I, et al. Curr Neuropharmacol. 2019;17(1):84-98. doi: 10.2174/1570159X15666170518151541. Curr Neuropharmacol. 2019. PMID: 28521702 Free PMC article. Review.
Their levels in the extracellular milieu are tightly controlled by various ectonucleotidases: ecto-nucleotide pyrophosphatase/phosphodiesterases (E-NPP), alkaline phosphatases (AP), ecto-nucleoside triphosphate diphosphohydrolases (E-NTPDases) and ecto-5'- nucleotidase (eN …
Their levels in the extracellular milieu are tightly controlled by various ectonucleotidases: ecto-nucleotide pyrophosphatase/phosphodiester …
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