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Key Product Details

Validated by


Species Reactivity

Human, Mouse, Rat, Canine, Chicken, Golden Syrian Hamster, Hamster, Monkey


Immunohistochemistry-Frozen, Knockout Validated, Simple Western, Western Blot



Antibody Source

Monoclonal Mouse IgG1 kappa Clone # 2A4


BSA Free


1 mg/ml

Product Summary for SREBP1 Antibody (2A4) - BSA Free


6 His-tag fusion protein of human SREBP1 corresponding to amino acids 301-407. [UniProt# P36956]

Reactivity Notes

Canine reactivity reported in scientific literature (PMID: 23720350). Hamster reactivity reported in scientific literature (PMID: 24393244). Chicken reactivity reported in multiple pieces scientific literature. Monkey reactivity reported in scientific literature (PMID: 26437365).


Cytoplasmic and nuclear






IgG1 kappa

Scientific Data Images for SREBP1 Antibody (2A4) - BSA Free

Western Blot: SREBP1 Antibody (2A4) [NB600-582] - Hepatic SREBP1c and SREBP2 protein abundance in C57BL/6 mice assigned to a high-fat (HF) or a high-fat/exercise (HF + EX) group for 8 weeks. Cytosolic and nuclear SREBP1c abundance. Image collected and cropped by CiteAb from the following publication (, licensed under a CC-BY license.
Western Blot: SREBP1 Antibody (2A4) [NB600-582] - Analysis of whole cell lysate from HeLa cells showing a single specific band for the expression of SREBP1 precursor protein (~120 kDa).
Simple Western: SREBP1 Antibody (2A4) [NB600-582] - Lane view shows a specific band for SREBP1 in 1.0 mg/ml of HeLa lysate. This experiment was performed under reducing conditions using the 12-230 kDa separation system.

Applications for SREBP1 Antibody (2A4) - BSA Free

Recommended Usage

Simple Western


Western Blot

Application Notes
This SREBP1 (clone 2A4) antibody is useful for WB where a band can be seen at 125 kDa (precursor) and additional bands may be seen at 60-70 kDa (cleaved).

In Simple Western only 10 - 15 uL of the recommended dilution is used per data point. Separated by Size-Wes, Sally Sue/Peggy Sue. The use of this antibody in IHC paraffin embedded tissue has been questionable.
Please Note: Optimal dilutions of this antibody should be experimentally determined.

Published Applications

Read 61 publications using NB600-582 in the following applications:

Formulation, Preparation, and Storage


Protein G purified




BSA Free


0.05% Sodium Azide


1 mg/ml


The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.

Stability & Storage

Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles.

Background: SREBP1

SREBP1 (sterol regulatory element binding protein 1, also called SREBF1 or BHLHD1) is a bHLH-LZ (basic helix-loop-helix-leucine zipper) transcription factor that acts as a key lipogenic transcription factor controlled by glucose/insulin and preferentially regulates lipogenesis via activating genes involved in fatty acid as well as triglyceride synthesis. It is a transcriptional activator required for lipid homeostasis and regulates transcription of the LDL receptor gene as well as the fatty acid and to a lesser degree the cholesterol synthesis pathway. SREBP1 has a dual sequence specificity binding to both an E-box motif (5'-ATCACGTGA-3') and to SRE-1 (sterol regulatory element 1; 5'-ATCACCCCAC-3'). It exists as multi-pass membrane protein in the membranes of ER, Golgi apparatus and cytoplasmic vesicle /COPII-coated vesicles and moves from ER to Golgi in the absence of sterols. It forms a tight complex with SCAP in ER membranes and interacts with LMNA. AMPK phosphorylate SREBP1 leading to suppression of protein processing and nuclear translocation, and target gene expression repression. Moreover, SIK1 mediated phosphorylation at Ser-402 site represses its activity through inhibition of DNA-binding.

Long Name

Sterol regulatory element-binding protein 1

Alternate Names


Entrez Gene IDs

6720 (Human); 20787 (Mouse); 78968 (Rat)

Gene Symbol



Product Documents for SREBP1 Antibody (2A4) - BSA Free

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

Product Specific Notices for SREBP1 Antibody (2A4) - BSA Free

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.



View specific protocols for SREBP1 Antibody (2A4) - BSA Free (NB600-582):

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Western Blot Protocol

1. Perform SDS-PAGE on samples to be analyzed, loading 20 ug of total protein per lane.
2. Transfer proteins to membrane according to the instructions provided by the manufacturer of the membrane and transfer apparatus.
3. Stain according to standard Ponceau S procedure (or similar product) to assess transfer success, and mark molecular weight standards where appropriate.
4. Rinse the blot.
5. Block the membrane using standard blocking buffer for at least 1 hour.
6. Wash the membrane in wash buffer three times for 10 minutes each.
7. Dilute primary antibody in blocking buffer and incubate overnight at 4C.
8. Wash the membrane in wash buffer three times for 10 minutes each.
9. Apply the diluted HRP conjugated secondary antibody in blocking buffer (as per manufacturers instructions) and incubate 1 hour at room temperature.
10. Wash the blot in wash buffer three times for 10 minutes each (this step can be repeated as required to reduce background).
11. Apply the detection reagent of choice in accordance with the manufacturers instructions.

**Note: Tween-20 can be added to the blocking or antibody dilution buffer at a final concentration of 0.05-0.2%.

*The above information is only intended as a guide. The researcher should determine what protocol best meets their needs. Please follow safe laboratory procedures.

FAQs for SREBP1 Antibody (2A4) - BSA Free

Showing  1 - 2 of 2 FAQs Showing All
  • Q: I would like to order SREBP-1 antibody, catalog number NB600-582. I am wondering if it might cross react with MDCK-C cells from dog?

    A: We have not tested NB600-582 with any dog samples, and cannot guarantee that it will cross-react. However, if you are interested in trying this antibody with dog samples you would be eligible for our Innovators Reward Program.

  • Q: I am looking for SREBF1 antibodies that can cross-react with Zebrafish srebf1. I am wondering whether you have any SREBF1 antibodies that have been tested for zebra fish or have high sequence identity in the immunogen region?

    A: Unfortunately we do not have any antibodies that have been tested in zebra fish. I have included the immunogen sequence for the antibodies it might be worth considering. I am not sure exactly what the zebra fish sequence is, I was unable to find it on, so I was unable to check the homology. The following antibodies all have available sample sizes. If you decide to try one you would qualify for our Innovator's Reward Program. NB600-582: 301-407 aa, NB100-2215: 300-400 aa, NB100-60545: 700-800 aa

Showing  1 - 2 of 2 FAQs Showing All