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GeneQ18030532· pop 6· linked from 35 articles

Also known as CAP-3, CAP3, PI-9, PI9, serpin family B member 9

Serpin B9 is a protein that in humans is encoded by the SERPINB9 gene. Serpin B9 is an inhibitor of Granzyme B (GzmB). GzmB is a potent cytotoxic molecule that is secreted by cytotoxic T lymphocytes and natural killer (NK) cells to induce apoptosis in target cells during an immune response. Serpin B9, expressed in the cytosol and nucleus, thus protects from apoptosis by cytotoxic T lymphocytes and NK cells.

Gene data

SERPINB9
Name
serpin family B member 9
Type
protein-coding
Aliases
CAP-3, CAP3, PI-9, PI9

This gene encodes a member of the serine protease inhibitor family which are also known as serpins. The encoded protein belongs to a subfamily of intracellular serpins. This protein inhibits the activity of the effector molecule granzyme B. Overexpression of this protein may prevent cytotoxic T-lymphocytes from eliminating certain tumor cells. A pseudogene of this gene is found on chromosome 6. [provided by RefSeq, Mar 2012].

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Gene · Ensembl

serpin family B member 9

Symbol
SERPINB9
Biotype
Protein coding
Organism
Homo sapiens
Location
6:2,887,169-2,903,318
Strand
Reverse (−)
Assembly
GRCh38
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via Ensembl · EMBL-EBI

Wikidata facts

Show 5 more facts
HomoloGene ID
37888
genomic start
2887270
genomic end
2903309
cytogenetic location
6p25.2
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Serpin B9 is a protein that in humans is encoded by the SERPINB9 gene. Serpin B9 is an inhibitor of Granzyme B (GzmB). GzmB is a potent cytotoxic molecule that is secreted by cytotoxic T lymphocytes and natural killer (NK) cells to induce apoptosis in target cells during an immune response. Serpin B9, expressed in the cytosol and nucleus, thus protects from apoptosis by cytotoxic T lymphocytes and NK cells.

Serpin B9 belongs to the large superfamily of serine proteinase inhibitors (serpins), which bind to and inactivate serine proteinases. These interactions are involved in many cellular processes, including coagulation, fibrinolysis, complement fixation, matrix remodeling, and apoptosis (Sprecher et al., 1995).[supplied by OMIM]

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