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MetabolomicsMonitoring recombinant protein expression in bacteria by rapid evaporative ionisation mass spectrometry

RATIONALE: There is increasing interest in methods of direct analysis mass spectrometry that bypass complex sample preparation steps.

METHODS: One of the most interesting new ionisation methods is rapid evaporative ionisation mass spectrometry (REIMS) in wh...

2022-01-28 | MTBLS957 | MetaboLights
MetabolomicsBacteria encode their own post-mortem protein catabolism to enable nutrient recycling
For many organisms, death is a tangible, visible event. In bacteria, death can be a natural or an induced process 1. Death permits genes conferring a survival advantage to be selected in a bacterial population. Furthermore, biomolecule recycling from dead bacteria is crucial under nutrient limitatio...
2025-01-23 | MTBLS10044 | MetaboLights
MetabolomicsBioaccumulation of therapeutic drugs by human gut bacteria (B.animalis assays)

Bacteria in the gut can modulate the availability and efficacy of therapeutic drugs. Interactions at this level have only recently started to being systematically mapped and the main underlying mechanism proposed is chemical transformation of drugs by microbes (biotransformation). Here, we invest...

2021-07-20 | MTBLS1264 | 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
MetabolomicsGut symbiotic bacteria-derived nicotinic acid regulates Bactrocera dorsalis reproduction

Depletion of gut commensal bacteria significantly reduced nicotinic acid (NA) levels in the hemolymph and ovaries of Bactrocera dorsalis, leading to impaired ovarian development. This inhibition was reversed by exogenous NA supplementation. We identified Enterobacter hormaechei as a key NA-produc...

2025-07-30 | MTBLS12798 | MetaboLights
MetabolomicsImpact of low-calorie sweeteners on gut bacteria is modulated by commonly used xenobiotics

The gut microbiota is implicated in adverse effects associated with low-calorie sweeteners. Yet, the direct impact of sweeteners on gut bacteria has not been systematically assessed. Here we report interactions between 25 phylogenetically diverse gut bacterial strains and 39 commercially used swe...

2025-06-11 | MTBLS11480 | MetaboLights
MetabolomicsBioaccumulation of therapeutic drugs by human gut bacteria (L.saccharolytica;Standards assays)

Bacteria in the gut can modulate the availability and efficacy of therapeutic drugs. Interactions at this level have only recently started to being systematically mapped and the main underlying mechanism proposed is chemical transformation of drugs by microbes (biotransformation). Here, we invest...

2021-07-20 | MTBLS2885 | MetaboLights
MetabolomicsBioaccumulation of therapeutic drugs by human gut bacteria (E.coli;C.saccharolyticum;S.salivarius;E.rectale;L.plantarum;L.lactis assays)

Bacteria in the gut can modulate the availability and efficacy of therapeutic drugs. Interactions at this level have only recently started to being systematically mapped and the main underlying mechanism proposed is chemical transformation of drugs by microbes (biotransformation). Here, we invest...

2021-07-20 | MTBLS1627 | MetaboLights
MetabolomicsSynergistic metabolism of salivary MUC5B in oral commensal bacteria during early biofilm formation

Bacterial metabolism in oral biofilms is comprised of complex networks of nutritional chains and biochemical regulations. These processes involve both intraspecies and interspecies networks as well as interactions with components from host saliva, gingival crevicular fluid, and dietary intake. In...

2023-10-30 | MTBLS8370 | 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
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