This gene encodes a member of the HtrA family of proteases. The encoded protein contains a putative signal peptide, an insulin growth factor binding domain, a Kazal protease inhibitor domain, a conserved trypsin domain and a PDZ domain. Based on studies on other related family members, this enzyme may function as a secreted oligomeric chaperone protease to degrade misfolded secretory proteins. Other human HtrA proteins have been implicated in arthritis, tumor suppression, unfolded stress response, apoptosis, and aging. [provided by RefSeq, Oct 2008]
Function:
Serine protease.
Subcellular Location:
Secreted.
Similarity:
Belongs to the peptidase S1B family.
Contains 1 IGFBP N-terminal domain.
Contains 1 Kazal-like domain.
Contains 1 PDZ (DHR) domain.
SWISS:
P83105
Gene ID:
20620
Database links:
Entrez Gene: 20620 Human
Entrez Gene: 330723 Mouse
Omim: 610700 Human
SwissProt: P83105 Human
SwissProt: A2RT60 Mouse
Unigene: 661014 Human
Unigene: 334452 Mouse
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Protein: DU145(human) lyates at 30ug;
Primary: Rabbit Anti-HTRA4(SL18101) at 1:300;
Secondary: 800CW Conjugated Goat (polyclonal) Anti-Rabbit IgG(H+L) at 1: 10000;
Predicted band size:49 kD
Observed band size:50 kD
Sample:
PSLC3 Cell (Human) Lysate at 30 ug
Primary: Anti- HTRA4 (SL18101R) at 1/300 dilution
Secondary: IRDye800CW Goat Anti-Rabbit IgG at 1/20000 dilution
Predicted band size: 51 kD
Observed band size: 51 kD
Protein: muscle(mouse) lyates at 30ug;
Primary: Rabbit Anti-HTRA4(SL18101) at 1:300;
Secondary: 800CW Conjugated Goat (polyclonal) Anti-Rabbit IgG(H+L) at 1: 10000;
Predicted band size:49 kD
Observed band size:50 kD
Tissue/cell: Rat pancreas tissue; 4% Paraformaldehyde-fixed and paraffin-embedded;
Antigen retrieval: citrate buffer ( 0.01M, pH 6.0 ), Boiling bathing for 15min; Block endogenous peroxidase by 3% Hydrogen peroxide for 30min; Blocking buffer (normal goat serum,SLC0005) at 37℃ for 20 min;
Incubation: Anti-HTRA4 Polyclonal Antibody, Unconjugated(SL18101R) 1:500, overnight at 4℃, followed by conjugation to the secondary antibody(SP-0023) and DAB(SLC0010) staining
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