Kinase suppressor of ras (ksr) encodes a MAP-kinase scaffold protein. It mediates the activation of the serine/threonine kinase encoded by Dsor1.

Mitogen-activated protein kinase ERK-A; Serine/threonine kinase which acts as an essential component of the MAP kinase signal transduction pathway to regulate poliferation, differentiation and effect cell fate decisions in various tissues. Required downstream of phl/Raf in the sev/sevenless, tor/torso, and EGF receptor homolog Egfr signal transduction pathways. Required for embryonic epithelial tissue repair. During larval development, mediates Ptth/tor signaling leading to the production of ecdysone, a hormone required for the initiation of metamorphosis.

Myocardin-related transcription factor (Mrtf) encodes a protein that binds to the product of bs, and likely other transcription factors, to enhance downstream gene activation. The activity of the product of Mrtf is regulated by free actin levels. It contributes to tracheal branching, border cell migration, and other cell stretching and invasive migration processes during development.

Ras-like protein 1; Ras proteins bind GDP/GTP and possess intrinsic GTPase activity (By similarity). Plays a role in eye development by regulating cell growth, survival of postmitotic ommatidial cells and differentiation of photoreceptor cells. During larval development, mediates Ptth/tor signaling leading to the production of ecdysone, a hormone required for the initiation of metamorphosis.

Mekk1, isoform B; Mekk1 (Mekk1) encodes a MAP kinase kinase kinase that regulates the stress response. It is required for resistance to several stresses, notably osmotic shock, and for the regulation of the activity of the product of Duox.

Tyrosine-protein kinase Src42A; Required directly or indirectly for the phosphorylation of drpr which is necessary for the interaction of drpr with shark and subsequent glial phagocytic activity. Together with drpr and shark, promotes the migration of macrophages to sites of wounding as part of a signaling cascade where Scr42a detects production of hydrogen peroxide at wound sites which triggers phosphorylation of drpr and subsequent recruitment and activation of shark. Essential for correct eye morphogenesis (ommatidial R7 neuron formation) which requires the Ras1/MAPK signal transduc [...]

Connector enhancer of KSR protein CNK; Enzyme regulator activity; MAP-kinase scaffold activity; receptor tyrosine kinase binding; mitogen-activated protein kinase kinase kinase binding; protein binding.

P38b MAP kinase (p38b) encodes the serine/threonine kinase that constitutes MAP kinase signaling cascades. It is phosphorylated by MAPK kinases and phosphorylates various substrates that play roles in stress responses, immune responses and differentiation; Belongs to the protein kinase superfamily. CMGC Ser/Thr protein kinase family. MAP kinase subfamily.

Extracellular signal-regulated kinase 7; Atypical MAPK protein that regulates protein secretion in a kinase activity-dependent manner. In response to starvation regulates protein secretion by mediating transitional endoplasmic reticulum site disassembly. Mediates inhibition of insulin-like peptide secretion upon disturbed ribosome biogenesis and acts as a downstream effector of TP53.