As a component of the decapping complex, involved in the degradation of mRNAs. Promotes P-body formation. Translational repressor. Homodimer. Component of the decapping complex. Interacts with DCP1 and DCP2. Gradually accumulates during seed maturation and reaches maximum levels in dry seeds. Fades progressively upon germination. Seedlings with pale and weak cotyledons, characterized by disorganized veins. Impaired mRNA decapping and reduced P-bodies size. Altered transient seed storage proteins (SSPs) translational repression and degradation during seed germination. Belongs to the LSM14 family.