EDC3 (enhancer of mRNA decapping 3) is a conserved RNA-binding protein that functions as a scaffold in post-transcriptional gene regulation. Structurally, EDC3 possesses an N-terminal Lsm domain, central FDF domain, and C-terminal YjeF-N domain that forms functionally critical dimers 1. The protein operates through multiple mechanisms: it enhances 5' cap removal by recruiting the Dcp1/2 decapping enzyme 2, promotes P-body assembly by aggregating mRNA ribonucleoproteins 1, and acts redundantly with Scd6 to target transcripts for degradation while coordinating translational repression 3. EDC3 function is modulated by direct binding to NADH, suggesting coupling of cellular energy status to mRNA decay 4. P-body dynamics are regulated through EDC3 interaction with Sbp1, which competes with Edc3-Edc3 interactions to promote disassembly 5. EDC3 participates in metabolic adaptation by suppressing mRNAs encoding respiratory and alternative carbon source utilization proteins during glucose limitation 3. Clinical relevance includes association with autosomal recessive intellectual developmental disorder 50, and smoking-induced epigenetic changes affecting EDC3 methylation in lung epithelial cells 6.