SERPINB1

Protein-coding gene in the species Homo sapiens From Wikipedia, the free encyclopedia

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.[5][6][7]

PDBOrtholog search: PDBe RCSB
AliasesSERPINB1, EI, ELANH2, HEL57, LEI, M/NEI, MNEI, PI-2, PI2, HEL-S-27, serpin family B member 1
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SERPINB1
Available structures
PDBOrtholog search: PDBe RCSB
Identifiers
AliasesSERPINB1, EI, ELANH2, HEL57, LEI, M/NEI, MNEI, PI-2, PI2, HEL-S-27, serpin family B member 1
External IDsOMIM: 130135; MGI: 1913472; HomoloGene: 133768; GeneCards: SERPINB1; OMA:SERPINB1 - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_030666

NM_025429

RefSeq (protein)

NP_109591

NP_079705

Location (UCSC)Chr 6: 2.83 – 2.84 MbChr 13: 33.03 – 33.04 Mb
PubMed search[3][4]
Wikidata
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MNEI (monocyte/neutrophil elastase inhibitor) is the mouse orthologue of human SerpinB1.[7]

Function

SerpinB1 is a cytoplasmic serine protease inhibitor of polymorphonuclear neutrophils. Among other serine proteases, it specifically inhibits neutrophil elastase, PR3 and cathepsin G, all found in neutrophil granules, by a suicide inhibition mechanism. SerpinB1 was found to reduce tissue damage caused by the mentioned proteases during inflammation and has a role in neutrophil homeostasis in mice. In various infection models (e.g. pneumonia) correlation of SerpinB1 absence and lack of microbial clearance have been shown. Different knockout strains serve as model to investigate the role of SerpinB1 in vivo.[8][9][10]

See also

References

Further reading

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