Homeotic protein spalt-major; Spalt major (salm) encodes a zinc finger transcriptional repressor. It mediates most dpp functions during development of the central part of the wing through regulation of the products of kni and ara. The product of salm is required for cell specification during the development of the nervous system, muscle, eye or trachea.

Protein decapentaplegic; Required during oogenesis for eggshell patterning and dorsal/ventral patterning of the embryo. Acts as a morphogen during embryogenesis to pattern the dorsal/ventral axis, specifying dorsal ectoderm and amnioserosa cell fate within the dorsal half of the embryo; this activity is antagonized by binding to sog and tsg. Induces the formation of visceral mesoderm and the heart in early embryos. Required later in embryogenesis for dorsal closure and patterning of the hindgut. Also functions postembryonically as a long-range morphogen during imaginal disk development [...]

Putative transcription factor; Brinker (brk) encodes a transcriptional repressor that plays important roles in the development of many tissues, including most imaginal discs, where its expression is negatively regulated by Dpp signaling.

Homeobox protein homothorax; All isoforms are required for patterning of the embryonic cuticle. Acts with exd to delimit the eye field and prevent inappropriate eye development. Isoforms that carry the homeodomain are required for proper localization of chordotonal organs within the peripheral nervous system and antennal identity; required to activate antennal-specific genes, such as sal and to repress the leg-like expression of dac. Necessary for the nuclear localization of the essential HOX cofactor, extradenticle (exd). Both necessary and sufficient for inner photoreceptors to adopt [...]

Homeotic protein distal-less; Transcription factor that plays a role in larval and adult appendage development. Specifies the identity of ventral appendages (including legs and antennae) and suppresses dorsal appendage development. Involved in patterning the distal-proximal limb axis. May control the adhesive properties of cells during limb morphogenesis. Also has a secondary role in the normal patterning of the wing margin.

Probable histone-binding protein Caf1; Core histone-binding subunit that may target chromatin assembly factors, chromatin remodeling factors and histone deacetylases to their histone substrates in a manner that is regulated by nucleosomal DNA. Component of several complexes which regulate chromatin metabolism. These include the chromatin assembly factor 1 (CAF-1) complex, which is required for chromatin assembly following DNA replication and DNA repair; the nucleosome remodeling and deacetylase complex (the NuRD complex), which promotes transcriptional repression by histone deacetylati [...]

Protein wingless; Binds as a ligand to a family of frizzled seven-transmembrane receptors and acts through a cascade of genes on the nucleus. Segment polarity protein. May be a growth factor. Acts on neighboring cells to regulate at least one gene, the homeobox segmentation gene engrailed. Wg signal represses arm phosphorylation. Wg signaling operates by inactivating the sgg repression of engrailed autoactivation. Wg and Wnt2 have a role in the developing trachea and together are responsible for all dorsal trunk formation. Wg also acts in the developing epidermis. Acts as a morphogen, [...]

Protein hedgehog C-product; Intercellular signal essential for a variety of patterning events during development. Establishes the anterior-posterior axis of the embryonic segments and patterns the larval imaginal disks. Binds to the patched (ptc) receptor, which functions in association with smoothened (smo), to activate the transcription of target genes wingless (wg), decapentaplegic (dpp) and ptc. In the absence of hh, ptc represses the constitutive signaling activity of smo through fused (fu). Essential component of a signaling pathway which regulates the Duox-dependent gut immune r [...]

Homeobox protein aristaless; Involved in the morphogenesis of proximal and distal pattern elements in a subset of appendages. Also has a role in early imaginal disk development; Belongs to the paired homeobox family.