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This gene encodes a cysteine protease that has a strict specificity for hydrolysis of asparaginyl bonds. This enzyme may be involved in the processing of bacterial peptides and endogenous proteins for MHC class II presentation in the lysosomal/endosomal systems. Enzyme activation is triggered by acidic pH and appears to be autocatalytic. Protein expression occurs after monocytes differentiate into dendritic cells. A fully mature, active enzyme is produced following lipopolysaccharide expression in mature dendritic cells. Overexpression of this gene may be associated with the majority of solid tumor types. This gene has a pseudogene on chromosome 13. Several alternatively spliced transcript variants have been described, but the biological validity of only two has been determined.
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Protein Aliases: AEP; Asparaginyl endopeptidase; cysteine protease 1; Legumain; preprolegumain; Protease, cysteine 1; protease, cysteine, 1; protease, cysteine, 1 (legumain); PRSC1EC 3.4.22.34
Gene Aliases: AEP; AI746452; AU022324; LGMN; LGMN1; PRSC1
UniProt ID: (Human) Q99538, (Mouse) O89017, (Rat) Q9R0J8
Entrez Gene ID: (Human) 5641, (Mouse) 19141, (Rat) 63865
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