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Anti-FABP4 antibody [EPR3579] ab92501 is a rabbit monoclonal antibody that is used in FABP4 western blotting, IHC and immunofluorescence. Suitable for human, mouse and rat samples.

- Recombinant format for unrivaled batch-batch consistency: no need for same-lot requests
- Antibody clone EPR3579 is the most widely used clone for FABP4 on the market
- Specificity and sensitivity confirmed in IHC with multi-tissue microarray (TMA) validation


Images

Western blot - Anti-FABP4 antibody [EPR3579] (AB92501), expandable thumbnail
  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-FABP4 antibody [EPR3579] (AB92501), expandable thumbnail
  • Immunocytochemistry/ Immunofluorescence - Anti-FABP4 antibody [EPR3579] (AB92501), expandable thumbnail
  • Immunocytochemistry/ Immunofluorescence - Anti-FABP4 antibody [EPR3579] (AB92501), expandable thumbnail
  • Multiplex immunohistochemistry - Anti-FABP4 antibody [EPR3579] (AB92501), expandable thumbnail

Publications

Key facts

Isotype
IgG
Host species
Rabbit
Storage buffer

pH: 7.2 - 7.4
Preservative: 0.01% Sodium azide
Constituents: 59% PBS, 40% Glycerol (glycerin, glycerine), 0.05% BSA

Form
Liquid
Clonality
Monoclonal

Immunogen

  • The exact immunogen used to generate this antibody is proprietary information.

Reactivity data

Select an application
Product promiseTestedExpectedPredictedNot recommended
mIHCWBICC/IFIHC-P
Human
Tested
Tested
Expected
Tested
Mouse
Expected
Tested
Tested
Expected
Rat
Expected
Tested
Expected
Expected

Tested
Tested

Species
Human
Dilution info
1/10000
Notes

-

Expected
Expected

Species
Mouse, Rat
Dilution info
Use at an assay dependent concentration.
Notes

-

Tested
Tested

Species
Mouse
Dilution info
1/1000 - 1/5000
Notes

Perform heat-mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol.

Species
Rat
Dilution info
1/1000 - 1/5000
Notes

-

Species
Human
Dilution info
1/1000 - 1/5000
Notes

-

Tested
Tested

Species
Mouse
Dilution info
1/50
Notes

For unpurified use at 1/1000.

Expected
Expected

Species
Human, Rat
Dilution info
Use at an assay dependent concentration.
Notes

-

Tested
Tested

Species
Human
Dilution info
1/16000
Notes

The mouse and rat recommendation is based on the WB results. We do not guarantee IHC-P for mouse and rat.

Perform heat-mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol.

Expected
Expected

Species
Mouse, Rat
Dilution info
Use at an assay dependent concentration.
Notes

-

Associated Products

Select an associated product type

6 products for Alternative Product

Target data

Function

Lipid transport protein in adipocytes. Binds both long chain fatty acids and retinoic acid. Delivers long-chain fatty acids and retinoic acid to their cognate receptors in the nucleus.

Alternative names

Recommended products

Anti-FABP4 antibody [EPR3579] ab92501 is a rabbit monoclonal antibody that is used in FABP4 western blotting, IHC and immunofluorescence. Suitable for human, mouse and rat samples.

- Recombinant format for unrivaled batch-batch consistency: no need for same-lot requests
- Antibody clone EPR3579 is the most widely used clone for FABP4 on the market
- Specificity and sensitivity confirmed in IHC with multi-tissue microarray (TMA) validation

Key facts

Isotype
IgG
Form
Liquid
Clonality
Monoclonal
Immunogen
  • The exact immunogen used to generate this antibody is proprietary information.
Clone number
EPR3579
Purification technique
Affinity purification Protein A
Specificity

This antibody may cross-react with FABP, FABP3 and FABP9 based on the blast alignments.
The mouse and rat recommendation is based on the WB results. We do not guarantee IHC-P for mouse and rat.

Concentration
Loading...

Storage

Shipped at conditions
Blue Ice
Appropriate short-term storage duration
1-2 weeks
Appropriate short-term storage conditions
+4°C
Appropriate long-term storage conditions
-20°C
Aliquoting information
Upon delivery aliquot
Storage information
Avoid freeze / thaw cycle

Notes

Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMAb® patents.

This product is a recombinant monoclonal antibody, which offers several advantages including:

  • - High batch-to-batch consistency and reproducibility
  • - Improved sensitivity and specificity
  • - Long-term security of supply
  • - Animal-free batch production

For more information, read more on recombinant antibodies.

Supplementary info

This supplementary information is collated from multiple sources and compiled automatically.
Activity summary

Fatty acid-binding protein 4 (FABP4) also known as aP2 is a member of the fatty acid-binding protein family. It predominantly exists in adipocytes and macrophages serving an important role in lipid metabolism and transport. FABP4 facilitates the binding and transport of long-chain fatty acids and other hydrophobic molecules within cells. The molecular weight of FABP4 is approximately 14-15 kDa. It exhibits high expression levels in adipose tissue and is inducible in macrophages under certain conditions.

Biological function summary

This protein participates in the regulation of lipid homeostasis and energy metabolism. FABP4 is part of the lipid-binding protein family that helps maintain fatty acid equilibrium within cells. By controlling the transport and signaling of lipids FABP4 impacts lipid storage insulin sensitivity and inflammation processes. Its activity is not confined to a specific multimeric complex yet it interacts with other proteins to exert its functions contributing to significant metabolic pathways in the body.

Pathways

FABP4 plays essential roles in the regulation of metabolic and inflammatory signaling pathways. It is intricately involved in the peroxisome proliferator-activated receptor gamma (PPARγ) pathway where it modulates adipose tissue development and glucose metabolism. In addition FABP4 has connections with the c-Jun N-terminal kinase (JNK) signaling pathway influencing stress and inflammatory responses. Interactions with these pathways place FABP4 at a link with proteins like PPARγ and JNK essential for cellular metabolic balance and responses to metabolic stress.

Associated diseases and disorders

Researchers connect FABP4 to conditions such as obesity and type 2 diabetes. Its expression levels correlate with insulin resistance and metabolic syndrome making it a target of interest in these metabolic disorders. FABP4 interacts with other proteins like adiponectin which is important in modulating glucose levels and fatty acid breakdown. Understanding FABP4's role in these pathways can facilitate the development of therapeutic strategies aimed at targeting metabolic dysfunctions associated with obesity and diabetes.

Product promise

We are dedicated to supporting your work with high quality reagents and we are here for you every step of the way should you need us.

In the unlikely event of one of our products not working as expected, you are covered by our product promise.

Full details and terms and conditions can be found here:
Terms & Conditions.

7 product images

  • Western blot - Anti-FABP4 antibody [EPR3579] (ab92501), expandable thumbnail

    Western blot - Anti-FABP4 antibody [EPR3579] (ab92501)

    FABP4 is abundantly expressed in adipose tissue and at a lower level in lung, heart, skin, kidney, liver and brain (PMID: 23143994).

    All lanes: Western blot - Anti-FABP4 antibody [EPR3579] (ab92501) at 1/1000 dilution

    Lane 1: Mouse brown adipose tissue lysates at 20 µg

    Lane 2: Mouse heart lysates at 20 µg

    Lane 3: Mouse kidney lysates at 20 µg

    Lane 4: Mouse lung lysates at 20 µg

    Lane 5: Human adipose tissue lysates at 20 µg

    Lane 6: Rat adipose tissue lysates at 20 µg

    Secondary

    All lanes: Western blot - Goat Anti-Rabbit IgG H&L (HRP) (Goat Anti-Rabbit IgG H&L (HRP) ab97051) at 1/20000 dilution

    Predicted band size: 15 kDa

    Observed band size: 15 kDa

  • Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-FABP4 antibody [EPR3579] (ab92501), expandable thumbnail

    Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-FABP4 antibody [EPR3579] (ab92501)

    Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) analysis of human breast tissue sections labeling FABP4 with Purified ab92501 at 1/16,000 dilution (0.03 µg/ml). Heat mediated antigen retrieval was performed Perform heat mediated antigen retrieval using Antigen Retrieval Buffer (100X Tris-EDTA Buffer, pH 9.0) ab93684 (Tris/EDTA buffer, pH 9.0). ImmunoHistoProbe one step HRP Polymer (ready to use) was used as the secondary antibody. Negative control: PBS instead of the primary antibody. Hematoxylin was used as a counterstain.

  • Immunocytochemistry/ Immunofluorescence - Anti-FABP4 antibody [EPR3579] (ab92501), expandable thumbnail

    Immunocytochemistry/ Immunofluorescence - Anti-FABP4 antibody [EPR3579] (ab92501)

    Immunocytochemistry/ Immunofluorescence analysis of 3T3-L1 (Mouse embryonic fibroblast) differentiated for 6 days cells labeling FABP4 with Purifiedab92501 at 1/50 dilution (9.9 μg/ml). Cells were fixed in 4% Paraformaldehyde and permeabilized with 0.1% tritonX-100. Cells were counterstained with Alexa Fluor® 594 Anti-alpha Tubulin antibody [DM1A] - Microtubule Marker ab195889 Anti-alpha Tubulin antibody [DM1A] - Microtubule Marker (Alexa Fluor® 594) 1/200 (2.5 μg/ml). Goat anti rabbit IgG (Alexa Fluor® 488, Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) ab150077) was used as the secondary antibody at 1/1000 (2 μg/ml) dilution. DAPI (blue) was used as nuclear counterstain. PBS instead of the primary antibody was used as the secondary antibody only control.

  • Immunocytochemistry/ Immunofluorescence - Anti-FABP4 antibody [EPR3579] (ab92501), expandable thumbnail

    Immunocytochemistry/ Immunofluorescence - Anti-FABP4 antibody [EPR3579] (ab92501)

    FABP4 (green) was detected using FABP4 primary antibody (unpurified ab92501; diluted 1/1000). Alpha tubulin (red) was detected using our mouse monoclonal (Anti-alpha Tubulin antibody [DM1A] - Loading Control ab7291) antibody. Cells were imaged by confocal microscopy, using z-stack for adipocyte-like cells.

  • Multiplex immunohistochemistry - Anti-FABP4 antibody [EPR3579] (ab92501), expandable thumbnail

    Multiplex immunohistochemistry - Anti-FABP4 antibody [EPR3579] (ab92501)

    Fluorescence multiplex immunohistochemical analysis of the human breast (Formalin/PFA-fixed paraffin-embedded sections).

    Panel A: merged staining of anti-B7H4 (Anti-B7H4 antibody [EPR23665-20] ab252438, red; Opal™690), anti-CD10 (Anti-CD10 antibody [EPR22865-73] ab255609, gray; Opal™520) and anti-FABP4 (ab92501, cyan; Opal™570) on human breast. Panel B: anti-B7H4 stained on glandular lumens. Panel C: anti-CD10 stained on myoepithelial cells. Panel D: anti-FABP4 stained on adipocytes. Opal Polymer HRP Ms + Rb was used as a secondary antibody.

    The section was incubated in three rounds of staining: in the order of Anti-B7H4 antibody [EPR23665-20] ab252438 at 1/100 dilution (4.69 μg/ml), Anti-CD10 antibody [EPR22865-73] ab255609 at 1/1000 dilution (0.615 μg/ml) and ab92501 at 1/10000 dilution (0.047 μg/ml) for 30 mins at room temperature. Each round was followed by a separate fluorescent tyramide signal amplification system.

    The immunostaining was performed on a Leica Biosystems BOND® RX instrument with an Opal™ 4-color kit. Image acquisition was performed with Leica SP8 confocal microscope.

    Heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0, epitope retrieval solution2) for 20 mins. DAPI (blue) was used as a nuclear counter stain.

  • Multiplex immunohistochemistry - Anti-FABP4 antibody [EPR3579] (ab92501), expandable thumbnail

    Multiplex immunohistochemistry - Anti-FABP4 antibody [EPR3579] (ab92501)

    Fluorescence multiplex immunohistochemical analysis of the Human parathyroid gland (Formalin/PFA-fixed paraffin-embedded sections).

    Panel A: merged staining of anti-CaSR (Anti-CaSR antibody [EPR24050-59] ab259846, magenta; Opal™690), anti-Cytochrome C (Anti-Cytochrome C antibody [EP1326-80-5] - BSA and Azide free ab247438, green; Opal™520) and anti-FABP4 (ab92501, red; Opal™570) on human parathyroid gland. Panel B: anti-CaSR stained on parathyroid chief cells. Panel C: anti-Cytochrome C stained on parathyroid oxyphil cells. Panel D: anti-FABP4 stained on adipocytes. Opal Polymer HRP Ms + Rb was used as a secondary antibody.

    The section was incubated in three rounds of staining: in the order of Anti-CaSR antibody [EPR24050-59] ab259846 at 1/5000 dilution (0.103 μg/ml), Anti-Cytochrome C antibody [EP1326-80-5] - BSA and Azide free ab247438 at 1/5000 dilution (0.195 μg/ml), and ab92501 at 1/10000 dilution (0.047 μg/ml) for 30 mins at room temperature. Each round was followed by a separate fluorescent tyramide signal amplification system.

    The immunostaining was performed on a Leica Biosystems BOND® RX instrument with an Opal™ 4-color kit. Image acquisition was performed with Leica SP8 confocal microscope.

    Heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0, epitope retrieval solution2) for 20 mins. DAPI (blue) was used as a nuclear counter stain.

  • Multiplex immunohistochemistry - Anti-FABP4 antibody [EPR3579] (ab92501), expandable thumbnail

    Multiplex immunohistochemistry - Anti-FABP4 antibody [EPR3579] (ab92501)

    Fluorescence multiplex immunohistochemical analysis of the human parathyroid gland (Formalin/PFA-fixed paraffin-embedded sections).

    Panel A: merged staining of anti-Parathyroid Hormone (Anti-Parathyroid Hormone antibody [SP151] - BSA and Azide free ab236229, magenta; Opal™690), anti-Cytochrome C (Anti-Cytochrome C antibody [EP1326-80-5] - BSA and Azide free ab247438, green; Opal™520) and anti-FABP4 (ab92501, red; Opal™570) on human parathyroid gland. Panel B: anti-Cytochrome C stained on parathyroid oxyphil cells. Panel C: anti-Parathyroid Hormone stained on parathyroid chief cells. Panel D: anti-FABP4 stained on adipocytes. Opal Polymer HRP Ms + Rb was used as a secondary antibody.

    The section was incubated in three rounds of staining: in the order of Anti-Parathyroid Hormone antibody [SP151] - BSA and Azide free ab236229 at 1/200 dilution (5.065 μg/ml) for 10 mins, then Anti-Cytochrome C antibody [EP1326-80-5] - BSA and Azide free ab247438 at 1/5000 dilution (0.195 μg/ml) and ab92501 at 1/10000 dilution (0.047 μg/ml) for 30 mins at room temperature. Each round was followed by a separate fluorescent tyramide signal amplification system.

    The immunostaining was performed on a Leica Biosystems BOND® RX instrument with an Opal™ 4-color kit. Image acquisition was performed with Leica SP8 confocal microscope.

    Heat mediated antigen retrieval was performed with Citrate buffer (pH 6.0, Epitope Retrieval Solution 1) for 20 mins. DAPI (blue) was used as a nuclear counter stain.

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