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Details on Person UniProt:Q0E8C8 Spn77Ba

Class:IdReferenceGeneProduct:8944800
_chainChangeLogsignal peptide:1-24 added on Fri November 4 2016;chain:25-450 added on Fri November 4 2016
_displayNameUniProt:Q0E8C8 Spn77Ba
_timestamp2023-11-03 15:40:58
chainsignal peptide:1-24
chain:25-450
checksumC633F8960EE6F367
commentFUNCTION Serine protease inhibitor which plays an essential role in regulating the tracheal melanization immune response to bacterial and fungal infection (PubMed:18854145, PubMed:22227521). Acts by negatively regulating a protease cascade involving Mp1 and Sp7, that functions in the activation of the Hayan-phenoloxidase (PPO1) cascade (PubMed:18854145).SUBCELLULAR LOCATION Detected in the extracellular space at the apical surface of tracheal cells.DEVELOPMENTAL STAGE In larvae, highly expressed in the tracheal system. Weak expression is also detected in other larval tissues including the gut and epidermis.DISRUPTION PHENOTYPE RNAi-mediated knockdown results in spontaneous melanization of the tracheal system in larvae and pupae (PubMed:18854145, PubMed:22227521). Displays melanization at the 2nd or 3rd larval stage and affected larvae die a few days after it first occurs (PubMed:18854145). Melanization is first detected between tracheal cells and the overlying cuticle, then increases in intensity and spreads to the epithelial layer of the affected tracheal cells (PubMed:18854145). Increased expression of the antimicrobial gene Drs in the trachea and fat body (PubMed:18854145).SIMILARITY Belongs to the serpin family.
created[InstanceEdit:8944791] Weiser, JD
descriptionrecommendedName: fullName evidence="5"Serine protease inhibitor 77Ba shortName evidence="5"Serpin 77Ba
geneNameSpn77Ba
CG6680
identifierQ0E8C8
isSequenceChangedFALSE
keywordGlycoprotein
Melanin biosynthesis
Protease inhibitor
Reference proteome
Secreted
Serine protease inhibitor
Signal
modified[InstanceEdit:9037114] Weiser, JD
[InstanceEdit:9637257] Weiser, JD
[InstanceEdit:9676415] Weiser, JD
[InstanceEdit:9852000] Weiser, Joel, 2023-11-03
nameSpn77Ba
referenceDatabase[ReferenceDatabase:2] UniProt
secondaryIdentifierSP77B_DROME
Q8IGD7
Q95SG7
sequenceLength450
species[Species:56210] Drosophila melanogaster
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