TMPRSS4 is a member of the peptidase S1 family and contains 1 LDL receptor class A domain, 1 peptidase S1 domain and 1 SRCR domain. It is a probable membrane protease capable of activating ENaC and may process sodium channels in endothelial cells. TMPRSS4 is overexpressed in thyroid neoplasms, and splice variants in TMPRSS4 are thought to be linked with different cancers. Three named isoforms are produced by alternative splicing.
Function:
Probable protease. Seems to be capable of activating ENaC.
Subcellular Location:
Membrane; Single-pass type II membrane protein (Potential).
Tissue Specificity:
High levels in pancreatic, gastric, colorectal and ampullary cancer. Very weak expression in normal gastrointestinal and urogenital tract.
Similarity:
Belongs to the peptidase S1 family.
Contains 1 LDL-receptor class A domain.
Contains 1 peptidase S1 domain.
Contains 1 SRCR domain.
SWISS:
Q9NRS4
Gene ID:
56649
Database links:
Entrez Gene: 451581 Chimpanzee
Entrez Gene: 489387 Dog
Entrez Gene: 101147411 Gorilla
Entrez Gene: 100071190 Horse
Entrez Gene: 56649 Human
Entrez Gene: 100390415 Marmoset (common)
Entrez Gene: 100436934 Orangutan
Omim: 606565 Human
SwissProt: Q9NRS4 Human
Unigene: 161985 Human
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Sample:Epithelium (Mouse)Lysate at 40 ug
Primary: Anti-TMPRSS4(SL6286R)at 1/300 dilution
Secondary: IRDye800CW Goat Anti-RabbitIgG at 1/20000 dilution
Predicted band size: 48kD
Observed band size: 60kD
Sample:A431 (Human)Cell Lysate at 40 ug
Primary: Anti-TMPRSS4(SL6286R)at 1/300 dilution
Secondary: IRDye800CW Goat Anti-RabbitIgG at 1/20000 dilution
Predicted band size: 48kD
Observed band size: 55kD
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