Evidence map›Paper›PMID 42756364›Full record

ArticleFrontiers in microbiology2026

Functional characterization of GplA (MSMEG-0394) reveals a novel determinant of glycopeptidolipids homeostasis in

Milena Della Gala, Rosangela Marasco, Ida De Chiara, Martina Montebuglio, Luigi Russo, Severina Pacifico, Lidia Muscariello

Abstract read
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Article in Frontiers in microbiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

What it found

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2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

7 authors.

Milena Della GalaDepartment of Environmental, Biological, and Pharmaceutical Sciences and Technologies (DiSTABiF), University of Campania Luigi Vanvitelli, Caserta, Italy.
Rosangela MarascoDepartment of Environmental, Biological, and Pharmaceutical Sciences and Technologies (DiSTABiF), University of Campania Luigi Vanvitelli, Caserta, Italy.
Ida De ChiaraDepartment of Environmental, Biological, and Pharmaceutical Sciences and Technologies (DiSTABiF), University of Campania Luigi Vanvitelli, Caserta, Italy.
Martina MontebuglioInstitute of Biostructure and Bioimaging (IBB), National Research Council (CNR), Napoli, Italy.
Luigi RussoDepartment of Environmental, Biological, and Pharmaceutical Sciences and Technologies (DiSTABiF), University of Campania Luigi Vanvitelli, Caserta, Italy.
Severina PacificoDepartment of Environmental, Biological, and Pharmaceutical Sciences and Technologies (DiSTABiF), University of Campania Luigi Vanvitelli, Caserta, Italy.
Lidia MuscarielloDepartment of Environmental, Biological, and Pharmaceutical Sciences and Technologies (DiSTABiF), University of Campania Luigi Vanvitelli, Caserta, Italy.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Introduction: Glycopeptidolipids (GPLs) are major constituents of the cell envelope of non-tuberculous mycobacteria (NTM) and play essential roles in colony morphology, surface motility, biofilm formation, antimicrobial susceptibility, and host-pathogen interactions. Although the GPL biosynthetic locus has been extensively characterized, the function of several conserved genes within this cluster remains unresolved. Here, we functionally characterized GplA (MSMEG-0394), a conserved small protein encoded within the GPL biosynthetic locus of Methods: The role of GplA was investigated by combining genetic and phenotypic analyses, lipid profiling by thin-layer chromatography and electrospray ionization mass spectrometry, transcriptional analyses, complementation studies, and structural modelling. Results: Deletion of gplA resulted in extensive alterations of cell-envelope-associated phenotypes, including rough colony morphology, impaired sliding motility, delayed biofilm formation, increased cell aggregation, reduced growth, and enhanced susceptibility to rifampicin. Biochemical analyses demonstrated a marked remodeling of the GPL profile in the mutant strain, supporting a role for GplA in maintaining GPL homeostasis. Transcriptional analyses further showed that Discussion: Collectively, our findings identify GplA as a determinant of glycopeptidolipid homeostasis and suggest that this conserved small protein contributes to the coordination of cell-envelope composition, surface-associated physiology, and operon expression in

Indexed as

cell-envelope homeostasisglycopeptidolipids (GPL)GplA (MSMEG-0394)Mycobacterium smegmatisnon-tuberculous mycobacteria

Identifiers

PMID42756364
PMCPMC13582512

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.