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SPE

Gene
SPE
Protein
Spaetzle-processing enzyme
Organism
Drosophila melanogaster
Length
400 amino acids
Function
Endopeptidase which plays a key role in innate immunity by cleaving Tl ligand spz and thereby activating the Toll pathway in response to fungal and Gram-positive bacterial infections (PubMed:16631589, PubMed:16399077, PubMed:18724373, PubMed:26843333, PubMed:16996061). Acts downstream of pathogen recognition receptors PGRP-SA and GNBP1 and protease grass in response to Gram-positive bacterial infection (PubMed:16399077). Acts downstream of protease psh in response to fungal infection (PubMed:16399077).
Similarity
Belongs to the peptidase S1 family. CLIP subfamily.
Mass
43.947 kDa
Sequence
MASTERNFLLLSLVVSALSGLVHRSDAAEISFGSCTPQQSDERGQCVHITSCPYLANLLMVEPKTPAQRILLSKSQCGLDNRVEGLVNRILVCCPQSMRGNIMDSEPTPSTRDALQQGDVLPGNDVCGFLFADRIFGGTNTTLWEFPWMVLLQYKKLFSETYTFNCGGALLNSRYVLTAGHCLASRELDKSGAVLHSVRLGEWDTRTDPDCTTQMNGQRICAPKHIDIEVEKGIIHEMYAPNSVDQRNDIALVRLKRIVSYTDYVRPICLPTDGLVQNNFVDYGMDVAGWGLTENMQPSAIKLKITVNVWNLTSCQEKYSSFKVKLDDSQMCAGGQLGVDTCGGDSGGPLMVPISTGGRDVFYIAGVTSYGTKPCGLKGWPGVYTRTGAFIDWIKQKLEP