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MetabolomicsConformational gating mechanism for processive catalysis of beta(1,3) -glucans

Processive catalysis is a fundamental molecular mechanism in nature to both build and dismantle complex biological polymers such as nucleic acids, proteins and carbohydrates, underpinning a broad spectrum of biotechnological applications. Here, we uncover a processive mechanism for the breakdown ...

2026-03-02 | MTBLS13959 | MetaboLights
MetabolomicsInsights into the stereochemical mechanism of the B12-dependent radical SAM glutamine C- methyltransferases QCMT
Methyl-coenzyme M reductase (MCR) is a crucial enzyme for methanogenesis and harbors several unusual post-translational modifications. Recent studies have identified glutamine C-methyltransferase (QCMT), as a B12-dependent radical SAM enzyme responsible for methylating a glutamine residue within the...
2026-04-28 | MTBLS14287 | MetaboLights
MetabolomicsThe dynamic changes and mechanism of no reflow injury after myocardial ischemia-reperfusion
This study aims to investigate the dynamic changes and correlation of no-reflow (NR) injury following myocardial ischemia and reperfusion, and to explore the underlying mechanism of NR injury through transcriptomic and metabolomic analysis. Methods: Healthy male SD rats were divided into two batches...
2026-08-25 | MTBLS15452 | MetaboLights
ProteomicsThe catalytic mechanism of vitamin K epoxide reduction in a cellular environment
Vitamin K epoxide reductases (VKOR) constitute a major family of integral membrane thiol oxidoreductases. In humans, VKOR sustains blood coagulation and bone mineralization through the vitamin K cycle. Previous chemical models assumed that the catalysis of human VKOR (hVKOR) starts from a fully redu...
ORGANISM(S): Homo sapiens (Human) 
2020-12-03 | PXD020676 | Pride
Human vkor Lc/ms/ms Catalytic mechanism 
ProteomicsSmoothened Transduces Hedgehog Signals via Activity-Dependent Sequestration of PKA Catalytic Subunits
The Hedgehog (Hh) pathway is essential for organ development, homeostasis, and regeneration. Dysfunction of this cascade drives several cancers. To control expression of pathway target genes, the G protein-coupled receptor (GPCR) Smoothened (SMO) activates glioma-associated (GLI) transcription facto...
ORGANISM(S): Homo Sapiens 
PXD023893 | panorama
MetabolomicsIntegrative Analysis of Trichosanthes kirilowii Maxim Formula Granules’ AntiTriple-Negative Breast Cancer Mechanism via Network Pharmacology, Metabolomics, and Molecular Pharmacology

Background: Triple-negative breast cancer (TNBC) urgently needs effective therapies due to limited targeted options and unfavorable outcomes. We investigated Trichosanthes kirilowii Maxim formula granules (TKM) using integrated network pharmacology, metabolomics, and molecular pharmacology to cla...

2026-02-15 | MTBLS13902 | MetaboLights
TranscriptomicsSmall RNAs generated in vitro by budding-yeast Dicer
The Dicer ribonuclease III (RNase III) enzymes process long double-stranded RNA (dsRNA) into the small interfering RNAs (siRNAs) that direct RNA interference. Here, we describe the structure and activity of a catalytically active fragment of Kluyveromyces polysporus Dcr1, which represents the noncan...
ORGANISM(S): Vanderwaltozyma polyspora 
2011-05-11 | E-GEOD-29168 | biostudies-arrayexpress
TranscriptomicsTelomerase subunit TERT regulates MYC stability independent of its role on telomeres (array)
Constitutively active MYC and reactivated telomerase often co-exist in cancers. While the reactivation of telomerase is thought to be essential for replicative immortality, MYC, in conjunction with co-factors, confers several growth advantages to cancer cells. However, it is unclear which co-factors...
ORGANISM(S): Homo sapiens 
2015-04-23 | E-GEOD-60175 | biostudies-arrayexpress
GenomicsMolecular mechanism of action of plant DRM de novo DNA methyltransferases
DNA methylation is a conserved epigenetic gene regulation mechanism. DOMAINS REARRANGED METHYLTRANSFERASE (DRM) is a key de novo methyltransferase in plants, but how DRM acts mechanistically is poorly understood. Here, we report the crystal structure of the methyltransferase domain of tobacco DRM (N...
ORGANISM(S): Arabidopsis thaliana 
2014-05-27 | E-GEOD-54944 | biostudies-arrayexpress
MetabolomicsIntegrated transcriptomic and metabolic profiling reveals the molecular mechanism of improved nitrogen metabolism in walnut (Juglans regia L.) roots mediated by soybean intercropping

The practice of intercropping young walnut orchards with soybeans has emerged as a promising approach within the framework of sustainable agricultural management. However, the precise impacts of soybean intercropping on nitrogen metabolism in walnut roots remain insufficiently elucidated. This st...

2026-01-19 | MTBLS13719 | MetaboLights
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