Results 11 to 20 of about 5,693 (184)

Synthesis of the oxysterol, 24(S), 25-epoxycholesterol, parallels cholesterol production and may protect against cellular accumulation of newly-synthesized cholesterol [PDF]

open access: yesLipids in Health and Disease, 2007
Aim The effects of 24(S),25-epoxycholesterol (24,25EC) on aspects of cholesterol homeostasis is well-documented. When added to cells, 24,25EC decreases cholesterol synthesis and up-regulates cholesterol efflux genes, including ABCA1. Synthesis of 24,25EC
Brown Andrew J   +2 more
doaj   +6 more sources

Genome-Wide Identification and Characterization of OSC Gene Family in Gynostemma pentaphyllum (Cucurbitaceae) [PDF]

open access: yesLife
Gynostemma pentaphyllum is a traditional Chinese medicinal plant of considerable application value and commercial potential, primarily due to its production of various bioactive compounds, particularly dammarane-type triterpenoid saponins that are ...
Xiao Zhang   +4 more
doaj   +2 more sources

Synthesis of arborane triterpenols by a bacterial oxidosqualene cyclase. [PDF]

open access: yesProc Natl Acad Sci U S A, 2017
SignificancePolycyclic lipids produced by bacteria and eukaryotes can be preserved in sedimentary rocks for millions of years. These ancient lipids can function as “molecular fossils” or biomarkers that can inform us about the types of organisms and environments on early Earth. However, proper interpretation of these biomarkers requires a comprehensive
Banta AB   +4 more
europepmc   +4 more sources

Functional characterization of triterpene synthases in Cibotium barometz

open access: yesSynthetic and Systems Biotechnology, 2023
Cibotium barometz (Linn.) J. Sm., a tree fern in the Dicksoniaceae family, is an economically important industrial exported plant in China and widely used in Traditional Chinese Medicine. C.
Zhongju Ji   +9 more
doaj   +1 more source

Arylpiperidines as a new class of oxidosqualene cyclase inhibitors [PDF]

open access: yesEuropean Journal of Medicinal Chemistry, 2016
The cyclization of oxidosqualene to lanosterol, catalyzed by the enzyme oxidosqualene cyclase (OSC), goes through a number of carbocationic high energy intermediates (HEI), and mimicking these intermediates is a promising approach for the development of OSC inhibitors. 3-Arylpiperidines (or tetrahydropyridines) were designed as steroidomimetic rings A +
Balliano, Gianni   +2 more
core   +3 more sources

A newly identified β-amyrin synthase gene hypothetically involved in oleanane-saponin biosynthesis from Talinum paniculatum (Jacq.) Gaertn.

open access: yesHeliyon, 2023
Talinum paniculatum or Javanese ginseng in Indonesia is a plant widely used as a traditional medicine. The genus Talinum produces oleanane-type saponins, such as talinumoside I.
Ika Qurrotul Afifah   +2 more
doaj   +1 more source

Squalene cyclase and oxidosqualene cyclase from a fern [PDF]

open access: yesFEBS Letters, 2007
Ferns are the most primitive vascular plants. The phytosterols of ferns are the same as those of higher plants, but they produce characteristic triterpenes. The most distinct feature is the lack of oxygen functionality at C‐3, suggesting that the triterpenes of ferns may be biosynthesized by direct cyclization of squalene.
Shinozaki, Junichi   +3 more
openaire   +2 more sources

The photosynthetic bacteria Rhodobacter capsulatus and Synechocystis sp. PCC 6803 as new hosts for cyclic plant triterpene biosynthesis. [PDF]

open access: yesPLoS ONE, 2017
Cyclic triterpenes constitute one of the most diverse groups of plant natural products. Besides the intriguing biochemistry of their biosynthetic pathways, plant triterpenes exhibit versatile bioactivities, including antimicrobial effects against plant ...
Anita Loeschcke   +13 more
doaj   +1 more source

Divergent evolution of oxidosqualene cyclases in plants [PDF]

open access: yesNew Phytologist, 2011
Triterpenes are one of the largest classes of plant metabolites and have important functions. A diverse array of triterpenoid skeletons are synthesized via the isoprenoid pathway by enzymatic cyclization of 2,3-oxidosqualene. The genomes of the lower plants Chlamydomonas reinhardtii and moss (Physcomitrella patens) contain just one oxidosqualene ...
Zheyong, Xue   +8 more
openaire   +2 more sources

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