Ume6 Coordinates Lysosomal Remodeling and Autophagy Through Transcriptional Repression in S. cerevisiae

Ume6 is a transcriptional repressor in Saccharomyces cerevisiae that regulates vacuolar protein composition and autophagy, with UME6 deletion increasing autophagy and overexpression delaying induction.

• Why it matters: Lysosome function and autophagy must be coordinated during stress, but the transcriptional links between vacuolar remodeling and autophagy are not fully defined.
• What they did: The study identifies Ume6’s regulatory role by examining how UME6 deletion or overexpression changes vacuolar protein composition and autophagic activity, including effects on vacuolar E3 ubiquitin ligases and coordination with Rph1.
• The result: Ume6 dysregulation shifts vacuolar composition via increased vacuolar components and enhanced degradation of selected vacuolar membrane proteins, and it implies kinase-controlled transcriptional control through Rim15, Rim11, and Mck1.

AI summary of the abstract · may contain errors · not medical advice · read the paper.