• Product nameAnti-htrA1 antibody
    See all htrA1 primary antibodies
  • Description
    Rabbit polyclonal to htrA1
  • Tested applicationsSuitable for: ICC/IF, WB, IHC-Pmore details
  • Species reactivity
    Reacts with: Human
    Predicted to work with: Mouse, Rat, Rabbit, Cow, Chimpanzee, Macaque Monkey, Gorilla, Orangutan
  • Immunogen

    Synthetic peptide conjugated to KLH derived from within residues 400 to the C-terminus of Human htrA1.

  • Positive control
    • In western blot, ab113927 gave a positive signal in the following whole cell lysates: MCF7; JEG3; HEK293; HepG2. In Immunohistochemistry, this antibody gave a positive signal in a formalin-fixed paraffin-embedded human placenta tissue section. This antibody gave a positive result in IF in the following Formaldehyde fixed cell line:HepG2.


  • FormLiquid
  • Storage instructionsShipped at 4°C. Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C or -80°C. Avoid freeze / thaw cycle.
  • Storage bufferpH: 7.40
    Preservative: 0.02% Sodium azide
    Constituent: PBS
    Note: Batches of this product that have a concentration < 1mg/ml may have BSA added as a stabilising agent. If you would like information about the formulation of a specific lot, please contact our scientific support team who will be happy to help.
  • Concentration information loading...
  • PurityImmunogen affinity purified
  • ClonalityPolyclonal
  • IsotypeIgG
  • Research areas


Our Abpromise guarantee covers the use of ab113927 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
ICC/IF Use a concentration of 5 µg/ml.
WB Use a concentration of 1 µg/ml. Detects a band of approximately 51 kDa (predicted molecular weight: 51 kDa).
IHC-P Use a concentration of 5 µg/ml. Perform heat mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol.


  • FunctionProtease that regulate the availability of nsulin-like growth factors (IGFs) by cleaving IGF-binding proteins. Represses signaling by TGF-beta family members.
  • Tissue specificityExpressed in a variety of tissues, with strongest expression in placenta.
  • Involvement in diseaseVariations in the promoter region of HTRA1 are the cause of susceptibility to age-related macular degeneration type 7 (ARMD7) [MIM:610149]. ARMD is the leading cause of vision loss and blindness among older individuals in the developed word. It is classified as either dry (nonneovascular) or wet (neovascular). ARMD7 is a wet form, in which new blood vessels form and break beneath the retina. This leakage causes permanent damage to surrounding retinal tissue, distorting and destroying central vision. Wet ARMD is more prevalent among Asians than Caucasians.
    Defects in HTRA1 are the cause of cerebral autosomal recessive arteriopathy with subcortical infarcts and leukoencephalopathy (CARASIL) [MIM:600142]. CARASIL is characterized by nonhypertensive cerebral small-vessel arteriopathy with subcortical infarcts, alopecia, and spondylosis, with an onset in early adulthood. On neuropathological examination, arteriosclerosis associated with intimal thickening and dense collagen fibers, loss of vascular smooth-muscle cells, and hyaline degeneration of the tunica media has been observed in cerebral small arteries.
  • Sequence similaritiesBelongs to the peptidase S1B family.
    Contains 1 IGFBP N-terminal domain.
    Contains 1 Kazal-like domain.
    Contains 1 PDZ (DHR) domain.
  • Cellular localizationSecreted.
  • Information by UniProt
  • Database links
  • Alternative names
    • ARMD7 antibody
    • CARASIL antibody
    • High-temperature requirement A serine peptidase 1 antibody
    • HtrA antibody
    • HtrA serine peptidase 1 antibody
    • HTRA1 antibody
    • HTRA1_HUMAN antibody
    • IGFBP5 protease antibody
    • L56 antibody
    • ORF480 antibody
    • Protease serine 11 (IGF binding) antibody
    • protease serine 11 antibody
    • PRSS11 antibody
    • Serine protease 11 antibody
    • Serine protease HTRA1 antibody
    • Serine protease HTRA1 precursor antibody
    see all

Anti-htrA1 antibody images

  • All lanes : Anti-htrA1 antibody (ab113927) at 1 µg/ml

    Lane 1 : MCF7 (Human breast adenocarcinoma cell line) Whole Cell Lysate
    Lane 2 : JEG-3 (Human placental choriocarcinoma cell line) Whole Cell Lysate
    Lane 3 : HEK293 (Human embryonic kidney cell line) Whole Cell Lysate
    Lane 4 : HepG2 (Human hepatocellular liver carcinoma cell line) Whole Cell Lysate

    Lysates/proteins at 10 µg per lane.

    Goat Anti-Rabbit IgG H&L (HRP) preadsorbed (ab97080) at 1/5000 dilution
    developed using the ECL technique

    Performed under reducing conditions.

    Predicted band size : 51 kDa
    Observed band size : 51 kDa
    Additional bands at : 36 kDa,42 kDa. We are unsure as to the identity of these extra bands.

    Exposure time : 20 minutes
  • IHC image of ab113927 staining in human placenta formalin fixed paraffin embedded tissue section, performed on a Leica BondTM system using the standard protocol F. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH6, epitope retrieval solution 2) for 20 mins. The section was then incubated with ab113927, 5µg/ml, for 15 mins at room temperature and detected using an HRP conjugated compact polymer system. DAB was used as the chromogen. The section was then counterstained with haematoxylin and mounted with DPX. For other IHC staining systems (automated and non-automated) customers should optimize variable parameters such as antigen retrieval conditions, primary antibody concentration and antibody incubation times
  • ICC/IF image of ab113927 stained HepG2 cells. The cells were 4% formaldehyde fixed (10 min) and then incubated in 1%BSA / 10% normal goat serum / 0.3M glycine in 0.1% PBS-Tween for 1h to permeabilise the cells and block non-specific protein-protein interactions. The cells were then incubated with the antibody ab113927 at 5µg/ml overnight at +4°C. The secondary antibody (green) was DyLight® 488 goat anti- rabbit (ab96899) IgG (H+L) used at a 1/1000 dilution for 1h. Alexa Fluor® 594 WGA was used to label plasma membranes (red) at a 1/200 dilution for 1h. DAPI was used to stain the cell nuclei (blue) at a concentration of 1.43µM. This antibody also gave a positive result in formaldehyde fixed (4%, 10min) HeLa and MCF-7 cell types at 5ug/ml.

References for Anti-htrA1 antibody (ab113927)

ab113927 has not yet been referenced specifically in any publications.

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