- CITATIONS: 2
|Application ||WB, IHC-P, IF, E|
|Calculated MW||51287 Da|
|Antigen Region||116-147 aa|
|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 116-147 amino acids from the N-terminal region of human HtrA1.|
|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.|
|Storage||Maintain 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.|
|Precautions||HtrA1 Antibody (N-term) is for research use only and not for use in diagnostic or therapeutic procedures.|
|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||Cell membrane. Secreted. Cytoplasm, cytosol Note=Predominantly secreted (PubMed:15208355). Also found associated with the plasma membrane (PubMed:21297635)|
|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).|
Provided below are standard protocols that you may find useful for product applications.
HtrA1 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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