Sammy Pontrelli

The paper develops a rapid reversed-phase LC-MS method for profiling polar metabolites, achieving high coverage and stability for 123 compounds in E. coli extracts.

The paper studies bacterial iron acquisition under low carbon conditions and finds that amino acids facilitate iron uptake by E. coli.

The paper examines how resource competition between chitin degraders and GlcNAc exploiters influences community viability and growth dynamics through factors like GlcNAc liberation rates and diffusive loss.

This study shows deep-sea microbes degrade chitin and couple it to extracellular electron transfer using syntrophic interactions in anoxic sediments.

The paper shows that EPS from chitin degradation influences microbial community diversity by supporting different consumer types through sequential breakdown.

This study introduces a method using microbial enzyme cocktails to quantify polysaccharides, demonstrating effectiveness for chitin and laminarin with low detection limits.

This study identifies how Synechocystis sp. PCC 6803 responds to 32 nutrients, finding 15 utilized mixotrophically, 7 enhancing growth, and 19 causing negative effects, with oxidative stress and metabolite imbalances playing key roles.

This study shows that marine bacteria switch from polysaccharide degradation to motility when exposed to breakdown products, enabling dispersal to new nutrient sources.

MicrobeMASST identifies microbial-derived metabolites and their producers using taxonomically-informed mass spectrometry data without prior knowledge.