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>   home   >   Products   >   Primary Antibodies   >   Signal Transduction   >   HtrA1 Antibody (C-term)   

HtrA1 Antibody (C-term)

Purified Rabbit Polyclonal Antibody (Pab)

  • WB - HtrA1 Antibody (C-term) AP1331b
    HtrA1-K396 (Cat. #AP1331b) western blot analysis in Hela cell line lysates (35ug/lane).This demonstrates the HtrA1 antibody detected the HtrA1 protein (arrow).
  • IHC-P - HtrA1 Antibody (C-term) AP1331b
    Formalin-fixed and paraffin-embedded human cancer tissue reacted with the primary antibody, which was peroxidase-conjugated to the secondary antibody, followed by DAB staining. This data demonstrates the use of this antibody for immunohistochemistry; clinical relevance has not been evaluated. BC = breast carcinoma; HC = hepatocarcinoma.
Product Information
  • Applications Legend:
  • WB=Western Blot
  • IHC=Immunohistochemistry
  • IHC-P=Immunohistochemistry (Paraffin-embedded Sections)
  • IHC-F=Immunohistochemistry (Frozen Sections)
  • IF=Immunofluorescence
  • FC=Flow Cytopmetry
  • IC=Immunochemistry
  • ICC=Immunocytochemistry
  • IP=Immunoprecipitation
  • DB=Dot Blot
  • CHIP=Chromatin Immunoprecipitation
  • FA=Fluorescence Assay
  • IEM=Immunoelectronmicroscopy
  • EIA=Enzyme Immunoassay
Primary Accession Q92743
Other Accession Q9QZK5
Reactivity Human
Predicted Rat
Host Rabbit
Clonality Polyclonal
Isotype Rabbit Ig
Calculated MW 51287 Da
Antigen Region 381-412 aa
Additional Information
Gene ID 5654
Other Names Serine protease HTRA1, 3421-, High-temperature requirement A serine peptidase 1, L56, Serine protease 11, HTRA1, HTRA, PRSS11
Target/Specificity This HtrA1 antibody is generated from rabbits immunized with a KLH conjugated synthetic peptide between 381-412 amino acids from the C-terminal region of human HtrA1.
Dilution WB~~1:1000
Format Purified polyclonal antibody supplied in PBS with 0.09% (W/V) sodium azide. This antibody is prepared by Saturated Ammonium Sulfate (SAS) precipitation followed by dialysis against PBS.
StorageMaintain refrigerated at 2-8°C for up to 2 weeks. For long term storage store at -20°C in small aliquots to prevent freeze-thaw cycles.
PrecautionsHtrA1 Antibody (C-term) is for research use only and not for use in diagnostic or therapeutic procedures.
Protein Information
Name HTRA1
Synonyms HTRA, PRSS11
Function Serine protease with a variety of targets, including extracellular matrix proteins such as fibronectin. HTRA1-generated fibronectin fragments further induce synovial cells to up-regulate MMP1 and MMP3 production. May also degrade proteoglycans, such as aggrecan, decorin and fibromodulin. Through cleavage of proteoglycans, may release soluble FGF-glycosaminoglycan complexes that promote the range and intensity of FGF signals in the extracellular space. Regulates the availability of insulin-like growth factors (IGFs) by cleaving IGF-binding proteins. Inhibits signaling mediated by TGF-beta family members. This activity requires the integrity of the catalytic site, although it is unclear whether TGF-beta proteins are themselves degraded. By acting on TGF-beta signaling, may regulate many physiological processes, including retinal angiogenesis and neuronal survival and maturation during development. Intracellularly, degrades TSC2, leading to the activation of TSC2 downstream targets.
Cellular Location Secreted. Cytoplasm, cytosol. Note=Predominantly secreted. Also found associated with the plasma membrane
Tissue Location Widely expressed, with strongest expression in placenta (at protein level). Secreted by synovial fibroblasts. Up- regulated in osteoarthritis and rheumatoid arthritis synovial fluids and cartilage as compared with non-arthritic (at protein level).
Research Areas
Citations ( 0 )


HtrA1 is a member of the trypsin family of serine proteases. This protein is a secreted enzyme that is proposed to regulate the availability of insulin-like growth factors (IGFs) by cleaving IGF-binding proteins. It has also been suggested to be a regulator of cell growth.


Howes, N., et al., Clin Gastroenterol Hepatol 2(3):252-261 (2004).
Chien, J., et al., Oncogene 23(8):1636-1644 (2004).
Hu, S.I., et al., J. Biol. Chem. 273(51):34406-34412 (1998).
Zumbrunn, J., et al., Genomics 45(2):461-462 (1997).
Zumbrunn, J., et al., FEBS Lett. 398 (2-3), 187-192 (1996).

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$ 295.00
$ 99.00
Cat# AP1331b
(40 western blots)
Availability: In Stock
Bulk Size
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