Peroxisomal core structures segregate diverse metabolic pathways.

ABSTRACT: Peroxisomes are single membrane-bounded oxidative organelles with various metabolic functions including β-oxidation of fatty acids. Peroxisomes of many species confine certain metabolic enzymes into sub-compartments sometimes visible as electron dense cores. Why these structures form is largely unknown. Here, we report that in the smut fungus Ustilago maydis detergent resistant core structures are enriched for different enzymes excluding several key enzymes of the β-oxidation pathway. This confinement contributes to generation of peroxisome subpopulations that differ in their enzyme content. We identify short amino acid motifs necessary and sufficient for protein self-assembly into aggregates in vitro. The motifs trigger enrichment in cores in vivo and are active in mammalian cells. Pertur

SUBMITTER: Backer N 

PROVIDER: S-EPMC11842775 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature