Maternal effect protein oskar; Organizes the germ plasm and directs localization of the posterior determinant nanos. Oskar protein is required to keep nos RNA and staufen protein at the posterior pole.

Zygotic gap protein knirps; Transcriptional repressor. Binds to multiple sites in the eve stripe 3 enhancer element. Plays an essential role in the segmentation process both by refining the expression patterns of gap genes and by establishing pair-rules stripes of gene expression.

Poly(A) RNA polymerase gld-2 homolog B; Cytoplasmic poly(A) RNA polymerase that adds successive AMP monomers to the 3'-end of specific maternal RNAs (bcd, Tl, and tor), forming a poly(A) tail, during late oogenesis and early embryogenesis. In contrast to the canonical nuclear poly(A) RNA polymerase, it only adds poly(A) to selected cytoplasmic mRNAs. Required for localization of mRNAs to both poles of the egg, to recruit or maintain known centrosomal proteins with two types of microtubule organizing centers (MTOCs): the central MTOC that forms between the meiosis II tandem spindles and [...]

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 tailless; Orphan receptor that binds DNA as a monomer to hormone response elements (HRE) containing an extended core motif half-site sequence 5'-AAGTCA-3' in which the 5' flanking nucleotides participate in determining receptor specificity. This receptor binds to the consensus sequence [AG][AG]AAGTCAA. Plays a key role in the establishment of non-metameric domains at the anterior and posterior poles of the embryo. It may also play a role in the nervous system. The maternal terminal pathway activates the tll gene in the termini; TLL activity then represses segmentation and activ [...]

Maternal protein exuperantia; Ensures the proper localization of the mRNA of the bicoid gene to the anterior regions of the oocyte thus playing a fundamental role in the establishment of the polarity of the oocyte. May bind the bcd mRNA.

Protein gurken; Critical for defining the anterior-posterior and dorsal- ventral axes of the egg. May signal directly to dorsal follicle cells through the receptor torpedo (top). During oogenesis this signaling pathway instructs follicle cells to follow a dorsal pathway of development rather than the default ventral pathway.

Zelda, isoform A; Zelda (zld) encodes a zinc finger transcription factor that functions in early blastoderm development. It works as a zygotic genome activator because it has a global role in regulating early expressed genes, such as genes essential for cellularization, sex determination and pattern formation. It is also required at later times in development.

LD47944p; CoA-ligase activity; fatty acid ligase activity. It is involved in the biological process described with: fatty acid biosynthetic process.