Tags: Protein.
Leukocyte elastase inhibitor (LEI) also known as serpin B1 is a protein that in humans is encoded by the SERPINB1 gene. It is a member of the clade B serpins or ov-serpins (ovalbumin related serpins) founded by ovalbumin.MNEI (murine neutrophil elastase inhibitor) is the mouse orthologue of human SerpinB1.