Pop2, isoform E; Pop2 (Pop2) encodes a poly(A)-specific ribonuclease involved in translation inhibition.

ATP-dependent RNA helicase me31b; ATP-dependent RNA helicase which is a core component of a variety of ribonucleoprotein complexes (RNPs) that play critical roles in translational repression and mRNA decapping during embryogenesis, oogenesis, neurogenesis and neurotransmission. Recruits core components and translational repressors to some RNP complexes, and mediates RNP aggregation into processing granules such as P-bodies. As part of a RNP complex containing tral, eIF4E1, cup, and pAbp, involved in RNP-mediated translational repression of maternal mRNAs during oogenesis and embryogene [...]

Brain tumor protein; A NHL-domain family protein that functions a translational repressor to inhibit cell proliferation. Plays a central role in translation repression of hb mRNA by being recruited by nos and pum to the Nanos Response Element (NRE), a 16 bp sequence in the hb mRNA 3'-UTR. Probably recruited by other proteins to repress translation of other mRNAs in other tissues. Involved in the regulation of ribosomal RNA synthesis and cell growth. Participates in abdominal segmentation and imaginal disk development. During neuroblast division, segregates asymmetrically and inhibits s [...]

LP17418p; Copper chaperone activity. It is involved in the biological process described with: copper ion transport; respiratory chain complex IV assembly; mitochondrial cytochrome c oxidase assembly.

Eukaryotic translation initiation factor 4E1; Recognizes and binds the 7-methylguanosine-containing mRNA cap during an early step in the initiation of protein synthesis and facilitates ribosome binding by inducing the unwinding of the mRNAs secondary structures. In 0-1 hour embryos, forms a complex with me31B, cup, tral and pAbp which binds to various mRNAs including maternal mRNAs, and downregulates their expression during the maternal-to-zygotic transition. Belongs to the eukaryotic initiation factor 4E family.

Maternal effect protein staufen; RNA-binding protein which forms ribonucleoprotein complexes (RNPs) that play critical roles in the localization, translational repression and turnover of RNAs during embryogenesis, neurotransmission and neurogenesis. In the oocyte, essential for the localization of both the osk/oskar mRNA to the posterior pole and bcd/bicoid RNA to the anterior pole, and is therefore required for the correct anterior- posterior patterning of the developing embryo. Association with osk or bcd at their respective poles, appears to promote the formation and stabilization o [...]

Protein sex-lethal; Sex determination switch protein which controls sexual development by sex-specific splicing. Regulates dosage compensation in females by suppressing hyperactivation of X-linked genes. Expression of the embryo-specific isoform is under the control of primary sex- determining signal, which depends on the ratio of X chromosomes relative to autosomes (X:A ratio). Expression occurs in 2X:2A cells, but not in X:2A cells. The X:A ratio seems to be signaled by the relative concentration of the X-linked transcription factors SIS-A and SIS-B. As a result, the embryo-specific [...]

Trailer hitch (tral) encodes a protein required for oocyte dorsoventral patterning via actin and microtubule cytoskeleton organization.

5'-3' exoribonuclease 1; Pacman (pcm) encodes an exoribonuclease that degrades decapped mRNA. It is involved in epithelial closure, male fertility, apoptosis and growth control.