Recombinant Human Legumain (LGMN)

Uniprot Id

Q99538

Target Species

Human

Target Name

LGMN

Target Full Name

Legumain

Target Function

Has a strict specificity for hydrolysis of asparaginyl bonds. Can also cleave aspartyl bonds slowly, especially under acidic conditions. Required for normal lysosomal protein degradation in renal proximal tubules. Required for normal degradation of internalized EGFR. Plays a role in the regulation of cell proliferation via its role in EGFR degradation. May be involved in the processing of proteins for MHC class II antigen presentation in the lysosomal/endosomal system.

Target Subcellular Location

Lysosome.

Target Protein Families

Peptidase C13 family

Target Tissue Specificity

Ubiquitous. Particularly abundant in kidney, heart and placenta.

Target Research Area

Immunology

Target Synonyms

AEP; Asparaginyl endopeptidase; cysteine 1; Cysteine protease 1; EC 3.4.22.34; Legumain; LGMN; LGMN_HUMAN; LGMN1; Protease; Protease cysteine 1 (legumain); Protease cysteine 1; PRSC1

Target Background

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. These two variants encode the same isoform.