Proteins identified by mass spectrometry |
Biological function |
Heat shock protein 70 |
Chaperone: Protein folding and transport; maintain cell homeostasis |
Chaperonin
subunit 4 delta |
Chaperone: assists in the folding of actin, tubulin and other cytosolic proteins |
Prophenoloxidase
activating factor 3 |
Haemolymph prophenoloxidase activating factor, induces lethal melanization response by modulating innate immune response |
Prophenoloxidase-2
(pro-PO2) (Copper binding
region) |
Induces melanization, implicated in the defense against microbes and wounding
PO oxidizes DOPA, and dopamine to melanin to produce quinones which are cytotoxic and facilitate killing of encapsulated pathogens/ parasites |
Paralytic
peptide (PP) |
Cytokine: involved in defense reaction and growth blocking activity |
Spatzle-1 |
Cytokine: Spätzle acts as the ligand of the Toll receptor to induce transcription of antimicrobial peptides |
Notch homolog (Notch) |
Notch signaling controls numerous cell-fate specification events. Dysregulated Notch signaling causes several diseases. Notch mediates anti-apoptotic activity |
DOPA decarboxylase |
DDC is an intermediate enzyme in the melanization pathway which decarboxylate DOPA to dopamine and is one of the essential enzymes for melanization events |
Serpin-4 |
SERPINs inhibit the serine protease activity, thereby regulating the melanization activity |
18 wheeler (18w)/ Toll |
Toll is a type I transmembrane receptor located on the plasma membrane that controls the dorsal-ventral patterning of the Drosophila embryo and involved in host resistance against fungal and Gram-positive bacterial infections |
Chitinase (Chi), transcript variant 3 |
chitinase play a crucial role in postembryonic development and it is activated after the ecdysone surge during larval–pupal transformation. Chitinase (Endochitinase) catalyzes the hydrolysis of β-(1-4)-glycosidic bonds of chitin polymers to produce chitooligomers |
Nedd2-like caspase |
Caspases induces inflammation as well as apoptosis |
Apoptosis-inducing factor (AIF) |
AIF induces chromatin condensation and DNA fragmentation leading to apoptosis, in the absence of caspase |
Autophagy 5-like (Atg5) |
Atg5 plays a role in autophagosome formation, and is also involved in a pro-apoptotic signalling pathway through cytochrome c release and caspase activation |
β –N acetyl glucosaminidase |
Chitooligomers produced from chitinase are subsequently converted to monomers by exochitinase β-N-acetylglucosaminidases |
Trehalase-2
(membrane trehalase) |
The trehalose is converted into glucose by an enzyme, alpha,alpha-trehalase present in insect tissues |
Candidate protein components of Toll pathway |
Cactus |
Inhibitor of NF-κB transcription factors |
Dorsal |
NF-κB transcription factor activated during signal transduction in Toll pathway to induce immune reaction |
Relish |
NF-κB transcription factor activated during signal transduction in IMD pathway |