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- UPA
- URK
- U-plasminogen activator
- plasminogen activator, urinary
- plasminogen activator, urokinase
- urokinase-type plasminogen activator precursor
- Urokinase-type plasminogen activator precursor (EC 3.4.21.73) (uPA)
(U-plasminogen activator).
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This gene
encodes a serine protease involved in degradation of the extracellular matrix and possibly
tumor cell migration and proliferation. A specific polymorphism in this gene may be
associated with late-onset Alzheimer disease and also with decreased affinity for
fibrin-binding. The protein encoded by this gene converts plasminogen to plasmin by
specific cleavage of an Arg-Val bond in plasminogen. This gene's proprotein is cleaved at
a Lys-Ile bond by plasmin to form a two-chain derivative in which a single disulfide bond
connects the amino-terminal A-chain to the catalytically active, carboxy-terminal B-chain.
This two-chain derivative is also called HMW-uPA (high molecular weight uPA). HMW-uPA can
be further processed into LMW-uPA (low molecular weight uPA) by cleavage of chain A into a
short chain A (A1) and an amino-terminal fragment. LMW-uPA is proteolytically active but
does not bind to the uPA receptor.
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- Location: 10q24
- Orientation: plus strand
- Size: 6318 bp
- 10 exons
- DNA sequence (Human): NC_000010
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- Mutations and SNPs (According
to HGMD and SNP)
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- Size: 431 amino acids; 48525 Da
- Catalytic activity: Specific cleavage of Arg-|-Val
bond in plasminogen to form plasmin.
Subcellular
location:
Protein
domains
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Fibrinolysis Pathway
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Human Protein Atlas (HPA): HPA008719
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