Protein immune deficiency; Essential for the imd/NF-kappa-B (Imd) humoral and epithelial immune response to Gram-negative bacteria. Functions as an adapter protein that transduces immunity signals from the activation of pathogen recognition receptors (PRRs) by bacterial infection to the Imd signaling pathway. Binding of diaminopimelic acid-type (DAP-type) bacterial peptidoglycans (PGN) causes multimerization or clustering of PGRP receptors which activate the Imd cascade probably by recruiting imd, Fadd and Dredd to the receptor complex. Once in proximity, Dredd cleaves imd in a Fadd-de [...]

Peptidoglycan-recognition protein LC; Major activator of the imd/Relish pathway and is likely to encode a pattern recognition molecule for the humoral immune response. Required for Relish processing and nuclear translocation following proteolytic cleavage. Involved in the response to lipopolysaccharide (LPS) and peptidoglycan of Gram-negative bacteria. The different isoforms probably display different recognition capabilities to various microbial patterns. [Isoform x]: Mediates the response to LPS, peptidoglycan and Gram-negative bacteria; Belongs to the N-acetylmuramoyl-L-alanine amid [...]

Nuclear factor NF-kappa-B p110 subunit; Plays a key role in the humoral immune response. Rel-p68 subunit translocates to the nucleus where it binds to the promoter of the Cecropin A1 gene and probably other antimicrobial peptide genes. I-kappa-B kinase complex (IKKbeta and key) and PGRP-LC are essential signaling components in transmitting the lipopolysaccharide (LPS) signal leading to cact degradation for NF-kappa-B (rel) activation. Part of a Toll-related receptor pathway that functions in the apoptosis of unfit cells during cell competition. May be part of a NF-kappa-B and Tollo sig [...]

Death-associated inhibitor of apoptosis 2; Required for activation of NF-kappaB transcription factors in the immune deficiency (Imd) signaling cascade which is essential for innate immune responses upon infection by Gram-negative bacteria. Promotes cytoplasmic cleavage of Rel and its translocation to the nucleus where it drives expression of antimicrobial peptides. Binds, polyubiquitinates and activates Dredd which is required for Rel- mediated induction of antimicrobial peptides. Anti- apoptotic protein which binds, ubiquitinates and inactivates the effector caspase Drice. Suppresses [...]

Inhibitor of nuclear factor kappa-B kinase subunit beta; Required for the activation of the NF-kappa-B factor Relish (Rel) by acting as an essential signaling component in transmitting the lipopolysaccharide (LPS) signal leading to cact degradation, which is required for direct activation of Rel. Phosphorylates inhibitors of NF- kappa-B (cact) thus leading to the dissociation of the inhibitor/NF- kappa-B complex and ultimately the degradation of the NF-kappa-B inhibitor. Essential for antibacterial immune response.

NF-kappa-B essential modulator; Kenny (key) encodes a scaffold protein that is a component of the IKK (IkappaB Kinase) complex, which participates in the activation of the transcription factor Rel in the Imd pathway. This pathway regulates the antibacterial response and other less characterized cellular processes.

Peptidoglycan-recognition protein LE; Peptidoglycan-recognition protein that plays a key role in innate immunity by binding to murein peptidoglycans (PGN) of Gram- negative bacteria and activating the imd/Relish pathway. Has no activity against on Gram-positive bacteria. Binds to diaminopimelic acid-type PGN (DAP-type PGN), an activator of the imd/Relish pathway. Functions synergistically with PGRP-LC in producing resistance to E.coli and B.megaterium infections, which have the DAP-type peptidoglycan. Acts both upstream and in parallel with PGRP-LC in the imd/Relish pathway, and is req [...]

Mitogen-activated protein kinase kinase kinase 7; Component of a protein kinase signal transduction cascade. Mediator of TGF-beta signal transduction. Responsible for activation of the JNK MAPK pathway (basket, bsk and hemipterous, hep) in response to LPS. Component of the NF-kappa-B pathway; relish-mediated JNK inhibition involves proteasomal degradation of Tak1; certain targets of Relish that are induced during immune responses may facilitate destruction of Tak1 and switch off the JNK cascade. Participates in diverse roles such as control of cell shape and regulation of apoptosis.

Caspase Nc subunit 1; Involved in the activation cascade of caspases responsible for apoptosis execution. Effector of steroid-mediated apoptosis during insect metamorphosis. Overexpression promotes programmed cell death. Interaction with Diap1 is required to suppress Dronc-mediated cell death; via Diap1-mediated ubiquitination of Dronc. Rate-limiting caspase in rpr and hid death pathway.