Role of the m6A methyltransferase Mettl16 in Drosophila development.

Drosophila Mettl16 mutants are viable but show multiple developmental and behavioral defects, including sterility and gametogenesis issues, despite limited impact on global protein synthesis.

• Why it matters: Understanding Mettl16's role in Drosophila reveals species-specific functions of m6A methyltransferases and addresses gaps in knowledge about its biological significance beyond mammals.
• What they did: Researchers used Mettl16 mutants and MeRIP-Seq analysis to investigate its function, finding that loss affects m6A on a small subset of transcripts and disrupts U6 snRNA methylation and splicing.
• The result: Findings suggest Mettl16 influences development and fertility through m6A deposition and U6-dependent splicing regulation, enabling insights into its specific molecular targets and mechanisms in vivo.