• Product nameAnti-BNP antibody
    See all BNP primary antibodies
  • Description
    Rabbit polyclonal to BNP
  • SpecificityCross-reactivity: Brain Natriuretic Peptide 100%, Human Atrial Natriuretic Peptide 0%, ACTH (human, 1-39) 0%, Calcitonin (human) 0%, Vasoactive Intestinal Peptide 0%. We have data to indicate that this antibody may not cross react with Mouse. However, this has not been conclusively tested and expression levels may vary in certain cell lines/tissues.
  • Tested applicationsSuitable for: IHC (PFA fixed), RIA, ELISA, WBmore details
  • Species reactivity
    Reacts with: Rat, Human
  • Immunogen

    Synthetic human Brain Natriuretic Polypeptide covalently attached to a carrier protein (bovine thyroglobulin).



Our Abpromise guarantee covers the use of ab19645 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
IHC (PFA fixed) Use at an assay dependent concentration. Has been found to stain 3% buffered paraformaldehyde fixed rat brain sections using indirect immunofluorescent procedure at a dilution of 1/1000.
RIA Use at an assay dependent concentration.
ELISA Use at an assay dependent concentration.
WB 1/500. Detects a band of approximately 18 kDa (predicted molecular weight: 15 kDa).


  • RelevanceBrain natriuretic peptide (BNP) circulates in blood as a peptide hormone with natriuretic, vasodilatory and renin inhibitory properties. BNP is secreted predominantly by the left ventricular myocytes in response to volume expansion and pressure overload. BNP belongs to a family of structurally similar peptide hormones, which includes atrial natriuretic peptide (ANP), BNP, C type natriuretic peptide (CNP) and urodilatin. These peptides are characterized by a common 17 amino acid ring structure with a disulfide bond between two cystein residues. This ring structure shows high homology between different natriuretic peptides (eleven of the 17 amino acid residues are homologous in the ring of each of the natriuretic peptides). BNP is a 32 amino acid peptide with disulfide bond between the cysteine residues Cys10 and Cys26. In earlier studies it has been demonstrated that BNP concentration in blood increases with the severity of congestive heart failure. Quantitative measurement of BNP in blood provides an objective indicator of congestive heart failure severity.
  • Cellular localizationSecreted
  • Database links
  • Alternative names
    • BNP(1-28) antibody
    • BNP(1-29) antibody
    • BNP(1-30) antibody
    • BNP(1-32) antibody
    • BNP(2-31) antibody
    • BNP(3-29) antibody
    • BNP(3-30) antibody
    • BNP(3-32) antibody
    • BNP(4-27) antibody
    • BNP(4-29) antibody
    • BNP(4-30) antibody
    • BNP(4-31) antibody
    • BNP(4-32) antibody
    • BNP(5-29) antibody
    • BNP(5-31) antibody
    • BNP(5-32) antibody
    • Brain natriuretic peptide 32 antibody
    • Brain type natriuretic peptide antibody
    • Gamma brain natriuretic peptide antibody
    • Natriuretic peptide B antibody
    • Natriuretic peptide precursor B antibody
    • natriuretic peptide, brain type antibody
    • Natriuretic peptides B antibody
    • natriuretic protein antibody
    • NPPB antibody
    see all

Anti-BNP antibody images

  • All lanes : Anti-BNP antibody (ab19645) at 1/500 dilution

    Lane 1 : SK N BE (Human neuroblastoma) Whole Cell Lysate
    Lane 2 : TE 671 (Human Rhabdomyosarcoma) Whole Cell Lysate
    Lane 3 : SW480 (Human colon adenocarcinoma cell line) Whole Cell Lysate

    Lysates/proteins at 10 µg per lane.

    Goat polyclonal to Rabbit IgG - H&L - Pre-Adsorbed (HRP) at 1/3000 dilution

    Predicted band size : 15 kDa
    Observed band size : 18 kDa (why is the actual band size different from the predicted?)
    Additional bands at : 40 kDa,48 kDa,60 kDa. We are unsure as to the identity of these extra bands.

References for Anti-BNP antibody (ab19645)

This product has been referenced in:
  • Holloway TM  et al. High intensity interval and endurance training have opposing effects on markers of heart failure and cardiac remodeling in hypertensive rats. PLoS One 10:e0121138 (2015). WB ; Rat . Read more (PubMed: 25803693) »
  • Li J  et al. Iptakalim ameliorates monocrotaline-induced pulmonary arterial hypertension in rats. J Cardiovasc Pharmacol Ther 18:60-9 (2013). IHC ; Rat . Read more (PubMed: 22947433) »

See all 3 Publications for this product

Product Wall

Application Western blot
Loading amount 40 µg
Gel Running Conditions Reduced Denaturing (15% PAGE)
Sample Mouse Tissue lysate - whole (Hypertrophoid diabetic heart)
Specification Hypertrophoid diabetic heart
Blocking step Milk as blocking agent for 1 hour(s) and 0 minute(s) · Concentration: 5% · Temperature: 4°C

Abcam user community

Verified customer

Submitted Jan 19 2015

Application Western blot
Loading amount 20 µg
Gel Running Conditions Reduced Denaturing (15% PAGE)
Sample Mouse Cell lysate - whole cell (P19CL6 cell line)
Specification P19CL6 cell line
Treatment a chemical
Blocking step BSA as blocking agent for 1 hour(s) and 0 minute(s) · Concentration: 5% · Temperature: 25°C

Dr. Chang Liu

Verified customer

Submitted Oct 08 2014

Thank you for contacting us regarding ab19645.

I have confirmed with the laboratory that the antibody has only been specifically tested to work with PFA fixed tissue. We do not have any information on how the antibody will work on paraffin e...

Read More

Thank you for contacting Abcam regarding ab19645.

I have confirmed that this antibody has not been specifically tested with cardiac tissue in IHC. According to SwissProt, this protein is expressed in the brain, but less so by cells of t...

Read More

Thank you for your enquiry. For ab19601, the epitope location has not been determined and the immunogen was full-length BNP peptide. This antibody reacts with both BNP and proBNP so the epitope is NOT located on the NT-proBNP fragment. For ab19645,...

Read More