Huckebein (hkb) is expressed in patches within the embryonic neuroectoderm and a subset of neuroblasts and their progeny, where it is required for proper neuronal specification and axon targeting. It is a terminal gap gene mediating the maternal terminal information at the posterior end of the blastoderm embryo.

Segmentation protein even-skipped; May play a role in determining neuronal identity. May be directly involved in specifying identity of individual neurons. Pair- rule protein required for segmentation; involved in transforming the broad, spatial, aperiodic expression patterns of the gap genes into a system of precise periodic expression patterns of the pair-rule and segmentary polarity genes; Belongs to the even-skipped homeobox family.

Homeotic protein bicoid; Segment polarity protein that provides positional cues for the development of head and thoracic segments. Regulates the expression of zygotic genes, possibly through its homeodomain, and inhibits the activity of other maternal gene products. May also bind RNA. Interacts with Bin1 to repress transcription of bicoid target genes in the anterior tip of the embryo; a process known as retraction.

Segmentation protein fushi tarazu; May play a role in determining neuronal identity, may be directly involved in specifying identity of individual neurons. Required during embryogenesis for the process of body segmentation. Homeotic protein, required in alternating segment primordia, it specifies the correct number of segments.

C-terminal-binding protein; Corepressor targeting diverse transcription regulators. Hairy-interacting protein required for embryonic segmentation and hairy-mediated transcriptional repression; Belongs to the D-isomer specific 2-hydroxyacid dehydrogenase family.

Twist (twi) encodes a transcription factor required for mesoderm cell fate. The product of twi is essential for gastrulation, the development of mesodermal derivatives, including somatic and visceral muscle, fat body and maintenance of muscle stem cells.

Smrter, isoform G; It is involved in the biological process described with: wing disc development; regulation of mitotic cell cycle; negative regulation of transcription by RNA polymerase II; ovarian follicle cell development.

Knirps-related protein; Knirps-like (knrl) encodes an orphan nuclear hormone receptor with a C4 zinc finger motif, without ligand-binding domain. It is a target gene of the Hedgehog, Wingless and Notch signaling pathways. It controls endoreduplication domains and epithelial morphogenesis in the fore- and hindgut.

Segmentation protein paired; Paired (prd) is a paired-rule gene that encodes a transcription factor with two independent DNA binding domains, a paired domain and a homeodomain. Its roles include embryonic segmentation, accessory gland development and male fertility.