Interference hedgehog (ihog) encodes a type 1 membrane protein that acts as a co-receptor for the product of hh upstream or at the level of the receptor encoded by ptc. It interacts with the products of disp, dlp, dally and shf. It is involved in imaginal pattern formation and embryonic cuticle pattern formation.

Protein patched; Segmentation polarity protein. Acts as a receptor for the hedgehog protein (HH). Associates with the smoothened protein (SMO) to transduce the hedgehog signal leading to the activation of wingless, decapentaplegic and patched itself. Participates in cell interactions that establish pattern within the segment and the imaginal disks during development. In the absence of HH, represses the constitutive signaling activity of smo through fused (FU).

Brother of ihog (boi) encodes a transmembrane protein that binds to the product of hh. The products of boi and ihog promote Hh signaling in receiving cells by acting as a co-receptor for the effector protein encoded by ptc. The product of boi also can suppress Hh signaling through a sequestration and release mechanism in cells producing the product of hh. It regulates many hh-dependent processes including proliferation, cell fate specification, and patterning.

Protein smoothened; Segment polarity protein required for correct patterning of every segment. G protein-coupled receptor that associates with the patched protein (ptc) to transduce the hedgehog (hh) signal through the activation of an inhibitory G-protein. In the absence of hh, ptc represses the constitutive signaling activity of smo through fused (fu). Essential component of a hh-signaling pathway which regulates the Duox-dependent gut immune response to bacterial uracil; required to activate Cad99C-dependent endosome formation, norpA-dependent Ca2+ mobilization and p38 MAPK, which a [...]

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, [...]

Dally-like, isoform A; Dally-like (dlp) encodes a glypican that regulates the signaling strength and range of the morphogens encoded by hh and wg; Belongs to the glypican family.

Suppressor of fused (Su(fu)) encodes a negative regulator of the Hedgehog signaling pathway. It forms a complex with the transcription factor encoded by ci to inhibit its activity; Belongs to the SUFU family.

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 [...]

Transcriptional activator cubitus interruptus; Has a dual function as a transcriptional activator and a repressor of the hedgehog (Hh) pathway. The full-length ci form (ciFL), acts as an activator (ciA) while ciR, its C-terminally truncated form, acts as a repressor. Involved in segment polarity. Required for the normal development of the posterior half of each embryonic segment. Engrailed protein directly represses ci expression in posterior compartment cells. Essential component of a hh-signaling pathway which regulates the Duox-dependent gut immune response to bacterial uracil; requ [...]