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MetabolomicsProtein-metabolite interactomics of carbohydrate metabolism reveal regulation of lactate dehydrogenase

Metabolic networks are interconnected and influence diverse cellular processes. The protein-metabolite interactions that mediate these networks are frequently low affinity and challenging to systematically discover. We developed mass spectrometry integrated with equilibrium dialysis for the disco...

2023-08-07 | MTBLS7237 | MetaboLights
MetabolomicsPROMIS, global analysis of PROtein-Metabolite Interactions using Size separation in Arabidopsis thaliana
Small molecules not only represent cellular building blocks and metabolic intermediates, but also regulatory ligands and signaling molecules that interact with proteins. Although these interactions affect cellular metabolism, growth, and development, they have been largely understudied. Herein, we d...
2018-07-19 | MTBLS94 | MetaboLights
MetabolomicsSerum protein N-glycosylation changes in multiple myeloma

BACKGROUND: Multiple myeloma is characterized by clonal proliferation of malignant plasma cells in the bone marrow that produce monoclonal immunoglobulins. N-glycosylation changes of these monoclonal immunoglobulins have been reported in multiple myeloma, but previous studies on...

2022-04-27 | MTBLS676 | MetaboLights
MetabolomicsMechanistic insights into the biological activity of S-Sulfocysteine in CHO cells using a multi-omics approach
S-Sulfocysteine (SSC), a bioavailable L-cysteine derivative (Cys), is known to be taken up and metabolized in Chinese hamster ovary (CHO) cells used to produce novel therapeutic biological entities. To gain a deeper mechanistic insight into the SSC biological activity and metabolization, a multi-omi...
2024-08-08 | MTBLS7424 | MetaboLights
MetabolomicsIntegrating two chromatographies in a co-fractionation mass spectrometry approach improved protein-metabolite interactions (PMIs) mapping capabilities and revealed novel protein-ligand pairings in Escherichia coli.
The protein-metabolite interactome remains understudied. We previously developed a co-fractionation mass-spectrometry-based approach called PROMIS to address this gap. PROMIS relies on size separation chromatography of protein-metabolite complexes from lysates, followed by proteomics and metabolomic...
2025-04-25 | MTBLS9098 | MetaboLights
MetabolomicsThe patatin-like protein PlpD forms novel structurally dynamic homodimers in the Pseudomonas aeruginosa outer membrane

Members of the Omp85 superfamily of outer membrane proteins (OMPs) found in Gram-negative bacteria, mitochondria and chloroplasts are characterized by a distinctive 16-stranded β-barrel transmembrane domain and at least one periplasmic POTRA domain. All previously studied Omp85 proteins promote c...

2025-12-08 | MTBLS9803 | MetaboLights
MetabolomicsGluconeogenic enzyme PCK1 supports S-adenosylmethionine biosynthesis and H3K9me3 to suppress HCC progression
Deciphering the crosstalk between metabolic reprogramming and epigenetic regulation is a promising strategy for cancer therapy. In this study, we discovered that the gluconeogenic enzyme PCK1 fuels the generation of S-adenosylmethionine (SAM) through the serine synthesis pathway. The methyltransfera...
2025-08-09 | MTBLS7651 | MetaboLights
MetabolomicsRibosomal mistranslation leads to silencing of the unfolded protein response and increased mitochondrial biogenesis

Translation fidelity is the limiting factor in the accuracy of gene expression. With an estimated frequency of 10-4, errors in mRNA decoding occur in a mostly stochastic manner. Little is known about the response of higher eukaryotes to chronic loss of ribosomal accuracy as per an increase in the...

2019-09-17 | MTBLS106 | MetaboLights
MetabolomicsThe Bardet-Biedl protein Bbs1 controls photoreceptor outer segment protein and lipid composition

Summary

Primary cilia are key sensory organelles whose dysfunction leads to ciliopathy disorders such as Bardet-Biedl syndrome (BBS). Retinal degeneration is common in ciliopathies, since the outer segments (OSs) of photoreceptors are highly specialized primary cilia. BBS...

2022-02-18 | MTBLS4013 | MetaboLights
MetabolomicsCrosstalk between S-nitrosylation and glycation defines a novel metabolic vulnerability in liver and renal cancers

Metabolic reprogramming is a defining feature of cancer; however, how it contributes to therapeutic resistance remains incompletely understood. Here we show that loss of aldo-ketoreductase 1A1 (AKR1A1) in renal cell carcinoma (RCC) and hepatocellular carcinoma (HCC) disrupts terminal glycolytic f...

2026-07-10 | MTBLS15003 | MetaboLights
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