Date published: 2026-5-9

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HtrA2 Antibody (E-3): sc-365594

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Datasheets
  • HtrA2 Antibody (E-3) is a mouse monoclonal IgG2b κ HtrA2 antibody provided at 200 µg/ml
  • raised against amino acids 341-400 of HtrA2 of human origin
  • HtrA2 Antibody (E-3) is recommended for detection of HtrA2 of human origin by WB, IP, IF and ELISA
  • Anti-HtrA2 Antibody (E-3) is available conjugated to agarose for IP; HRP for WB, IHC(P) and ELISA; and to either phycoerythrin or FITC for IF, IHC(P) and FCM
  • also available conjugated to Alexa Fluor® 488, Alexa Fluor® 546, Alexa Fluor® 594 or Alexa Fluor® 647 for WB (RGB), IF, IHC(P) and FCM, and for use with RGB fluorescent imaging systems, such as iBright™ FL1000, FluorChem™, Typhoon, Azure and other comparable systems
  • also available conjugated to Alexa Fluor® 680 or Alexa Fluor® 790 for WB (NIR), IF and FCM; for use with Near-Infrared (NIR) detection systems, such as LI-COR®Odyssey®, iBright™ FL1000, FluorChem™, Typhoon, Azure and other comparable systems
  • m-IgG Fc BP-HRP, m-IgG2b BP-HRP and m-IgGκ BP-HRP are the preferred secondary detection reagents for HtrA2 Antibody (E-3) for WB applications. These reagents are now offered in bundles with HtrA2 Antibody (E-3) (see ordering information below).
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HtrA2 Antibody (E-3) is a mouse monoclonal IgG2b kappa light chain antibody that detects HtrA2 protein of human origin by western blotting (WB), immunoprecipitation (IP), immunofluorescence (IF), and enzyme-linked immunosorbent assay (ELISA). anti-HtrA2 antibody (E-3) is available in both non-conjugated and various conjugated forms, including agarose, horseradish peroxidase (HRP), phycoerythrin (PE), fluorescein isothiocyanate (FITC), and multiple Alexa Fluor® conjugates. HtrA2, also known as Omi, is a member of the serine protease family and plays a crucial role in cellular stress responses by degrading misfolded proteins, thereby preventing the accumulation of potentially toxic aggregates. HtrA2 is predominantly localized in the mitochondria and is involved in regulating apoptosis, making HtrA2 essential for maintaining cellular homeostasis. HtrA2 is expressed in various tissues, including the kidney, colon, and thyroid, and HtrA2 expression is tightly regulated; alterations in HtrA2 levels have been implicated in several diseases, including neurodegenerative disorders and cancer. HtrA2 exists in two polypeptide forms and features a modified PDZ domain that influences HtrA2 interactions with other proteins, such as the Mxi2 protein, which is not recognized by the alternatively spliced D-Omi form. The conservation of the HtrA2 gene across mammalian species underscores HtrA2′s fundamental biological importance, and HtrA2′s ability to undergo autoproteolysis further highlights HtrA2′s dynamic role in cellular processes.

For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.

Alexa Fluor® is a trademark of Molecular Probes Inc., OR., USA

LI-COR® and Odyssey® are registered trademarks of LI-COR Biosciences

HtrA2 Antibody (E-3) References:

  1. Expression, purification, and functional analysis of the human serine protease HtrA2.  |  Savopoulos, JW., et al. 2000. Protein Expr Purif. 19: 227-34. PMID: 10873535
  2. Characterization of human HtrA2, a novel serine protease involved in the mammalian cellular stress response.  |  Gray, CW., et al. 2000. Eur J Biochem. 267: 5699-710. PMID: 10971580
  3. Tissue-specific splicing of Omi stress-regulated endoprotease leads to an inactive protease with a modified PDZ motif.  |  Faccio, L., et al. 2000. Genomics. 68: 343-7. PMID: 10995577
  4. Temperature dependent protease activity and structural properties of human HtrA2 protease.  |  Zhang, X. and Chang, Z. 2004. Biochemistry (Mosc). 69: 687-92. PMID: 15236609
  5. Immunohistochemical analysis of Omi/HtrA2 expression in prostate cancer and benign prostatic hyperplasia.  |  Hu, XY., et al. 2006. APMIS. 114: 893-8. PMID: 17207090
  6. HtrA2 regulates beta-amyloid precursor protein (APP) metabolism through endoplasmic reticulum-associated degradation.  |  Huttunen, HJ., et al. 2007. J Biol Chem. 282: 28285-95. PMID: 17684015
  7. Omi/HtrA2 and XIAP are components of platelet apoptosis signalling.  |  Winkler, J., et al. 2013. Thromb Haemost. 109: 532-9. PMID: 23306356
  8. Stress Conditions Increase Vimentin Cleavage by Omi/HtrA2 Protease in Human Primary Neurons and Differentiated Neuroblastoma Cells.  |  Lucotte, B., et al. 2015. Mol Neurobiol. 52: 1077-1092. PMID: 25288153
  9. Inhibition of HtrA2 alleviated dextran sulfate sodium (DSS)-induced colitis by preventing necroptosis of intestinal epithelial cells.  |  Zhang, C., et al. 2019. Cell Death Dis. 10: 344. PMID: 31019191
  10. Serine Protease HtrA2/Omi Deficiency Impairs Mitochondrial Homeostasis and Promotes Hepatic Fibrogenesis via Activation of Hepatic Stellate Cells.  |  Hur, W., et al. 2019. Cells. 8: PMID: 31547195
  11. Primary structure of a putative serine protease specific for IGF-binding proteins.  |  Zumbrunn, J. and Trueb, B. 1996. FEBS Lett. 398: 187-92. PMID: 8977104
  12. Human HtrA, an evolutionarily conserved serine protease identified as a differentially expressed gene product in osteoarthritic cartilage.  |  Hu, SI., et al. 1998. J Biol Chem. 273: 34406-12. PMID: 9852107

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

HtrA2 Antibody (E-3)

sc-365594
200 µg/ml
$322.00

HtrA2 Antibody (E-3): m-IgG Fc BP-HRP Bundle

sc-529401
200 µg Ab; 10 µg BP
$361.00

HtrA2 Antibody (E-3): m-IgGκ BP-HRP Bundle

sc-522282
200 µg Ab, 40 µg BP
$361.00

HtrA2 Antibody (E-3): m-IgG2b BP-HRP Bundle

sc-550105
200 µg Ab; 10 µg BP
$361.00

HtrA2 Antibody (E-3) AC

sc-365594 AC
500 µg/ml, 25% agarose
$424.00

HtrA2 Antibody (E-3) HRP

sc-365594 HRP
200 µg/ml
$322.00

HtrA2 Antibody (E-3) FITC

sc-365594 FITC
200 µg/ml
$336.00

HtrA2 Antibody (E-3) PE

sc-365594 PE
200 µg/ml
$349.00

HtrA2 Antibody (E-3) Alexa Fluor® 488

sc-365594 AF488
200 µg/ml
$364.00

HtrA2 Antibody (E-3) Alexa Fluor® 546

sc-365594 AF546
200 µg/ml
$364.00

HtrA2 Antibody (E-3) Alexa Fluor® 594

sc-365594 AF594
200 µg/ml
$364.00

HtrA2 Antibody (E-3) Alexa Fluor® 647

sc-365594 AF647
200 µg/ml
$364.00

HtrA2 Antibody (E-3) Alexa Fluor® 680

sc-365594 AF680
200 µg/ml
$364.00

HtrA2 Antibody (E-3) Alexa Fluor® 790

sc-365594 AF790
200 µg/ml
$364.00

What is the recommended fixation method for immunofluorescence staining with HtrA2 (E-3): sc-365594 monoclonal antibody?

Asked by: jerojero
Thank you for your inquiry. We recommend fixing cells for 5 minutes in -10°C methanol and allowing to air dry. The full protocol can be viewed here: https://www.scbt.com/scbt/resources/protocols/immunofluorescence-cell-staining
Answered by: Technical Support
Date published: 2017-02-27
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Rated 3 out of 5 by from Only unprocessed protein isoform detectedused on mouse heart lysates, unprocessed for was well detected but unfortunately not the processed one
Date published: 2017-11-23
Rated 5 out of 5 by from Produced great immunofluorescence nuclearProduced great immunofluorescence nuclear staining in methanol-fixed HeLa cells. -SCBT QC
Date published: 2015-03-27
Rated 5 out of 5 by from Nice Western Blot data of HtrA2 expressionNice Western Blot data of HtrA2 expression in Jurkat whole cell lysate. -SCBT QC
Date published: 2014-10-21
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HtrA2 Antibody (E-3) is rated 4.3 out of 5 by 3.
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