c-Fos Antibody


Immunocytochemistry/ Immunofluorescence: c-Fos Antibody [NBP1-89065] - Staining of human cell line A-431 shows localization to nucleoplasm. Antibody staining is shown in green.
Immunohistochemistry-Paraffin: c-Fos Antibody [NBP1-89065] - Staining of human stomach shows moderate to strong nuclear positivity in glandular cells.
Immunohistochemistry-Paraffin: c-Fos Antibody [NBP1-89065] - Staining of human cervix, uterine shows moderate to strong nuclear positivity in squamous epithelial cells.
Immunohistochemistry-Paraffin: c-Fos Antibody [NBP1-89065] - Staining of human kidney shows weak to moderate nuclear positivity in cells in tubules.
Immunohistochemistry-Paraffin: c-Fos Antibody [NBP1-89065] - Staining of human pancreas shows very weak and few nuclear positivity in exocrine glandular cells.

Product Details

Reactivity Hu, Mu, RtSpecies Glossary
Applications WB, ICC/IF, IHC

Order Details

c-Fos Antibody Summary

Predicted Species
Mouse (94%), Rat (94%). Backed by our 100% Guarantee.
Immunogen affinity purified
Innovator's Reward
Test in a species/application not listed above to receive a full credit towards a future purchase.


  • Immunocytochemistry/ Immunofluorescence 0.25-2 ug/ml
  • Immunohistochemistry 1:200 - 1:500
  • Immunohistochemistry-Paraffin 1:200 - 1:500
  • Western Blot -Reported in scientific literature (PMID: 25726846)
Application Notes
For IHC-Paraffin, HIER pH 6 retrieval is recommended. ICC/IF, Fixation Permeabilization: Use PFA/Triton X-100.
Control Peptide
c-Fos Recombinant Protein Antigen (NBP1-89065PEP)
Read Publications using
NBP1-89065 in the following applications:

  • WB
    1 publication

Packaging, Storage & Formulations

Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles.
PBS (pH 7.2) and 40% Glycerol
0.02% Sodium Azide
Immunogen affinity purified

Alternate Names for c-Fos Antibody

  • activator protein 1
  • AP-1
  • cellular oncogene c-fos
  • Cellular oncogene fos
  • cFos
  • c-Fos
  • FBJ murine osteosarcoma viral (v-fos) oncogene homolog (oncogene FOS)
  • FBJ murine osteosarcoma viral oncogene homolog
  • Fos proto-oncogene, AP-1 trancription factor subunit
  • FOS
  • G0/G1 switch regulatory protein 7
  • G0S7
  • p55
  • proto-oncogene c-Fos


c-Fos is an intermediate early gene that is one of four members of the FOS family of activator protein-1 (AP-1) transcription factors, which also includes Fra-1, Fra-2, and FosB (1-3). Under the FOS gene, human c-Fos is synthesized as a protein of 308 amino acids (aa) with a basic leucine zipper (bZip) domain important for dimerization, and a basic domain for interacting with DNA, with a theoretical molecular weight of ~40.6 kDa (4,5). c-Fos can heterodimerize with members of the JUN family (c-Jun, JunB, and JunD) to form the active transcription factor AP-1 complex (3,5). AP-1 related proteins bind TPA-related responsive elements (TRE), cAMP responsive elements (CRE), and related sequences, with c-Fos:c-Jun dimers partial to TRE sites (5).

In response to stimuli, c-Fos, which is encoded by protooncogenes, has a role in cell proliferation, differentiation, and transformation (3,6). A variety of stimuli can increase c-Fos expression such as growth factors, proinflammatory cytokines, UV radiation, neurotransmitters, hormones, injury, and stress (1,6). c-Fos has long been used as a marker for neuronal activity and is associated with neural and behavioral responses following stimuli (1-3, 6-7). Mouse studies have revealed that c-Fos is important for efficient neurogenesis and cortical development (3). Additionally, c-Fos signal can be used as a molecular marker for learning and memory, such as recognition and fear (2,7). Studies have found that repeated positive stimuli result in increased Fos expression while, conversely, repeated negative value stimuli are indicated by decreased signal (7). Intermediate early genes have also been implicated in neuropsychiatric disorders including showing altered c-Fos expression in a schizophrenia animal model (2). Furthermore, antipsychotics and antidepressants are both capable of impacting c-Fos expression (2).


1. Kovacs K. J. (1998). c-Fos as a transcription factor: a stressful (re)view from a functional map. Neurochemistry International. https://doi.org/10.1016/s0197-0186(98)00023-0

2. Gallo, F. T., Katche, C., Morici, J. F., Medina, J. H., & Weisstaub, N. V. (2018). Immediate Early Genes, Memory and Psychiatric Disorders: Focus on c-Fos, Egr1 and Arc. Frontiers in Behavioral Neuroscience. https://doi.org/10.3389/fnbeh.2018.00079

3. Velazquez, F. N., Caputto, B. L., & Boussin, F. D. (2015). c-Fos importance for brain development. Aging. https://doi.org/10.18632/aging.100862

4. Uniprot (P01100)

5. Wu, Z., Nicoll, M., & Ingham, R. J. (2021). AP-1 family transcription factors: a diverse family of proteins that regulate varied cellular activities in classical hodgkin lymphoma and ALK+ ALCL. Experimental Hematology & Oncology. https://doi.org/10.1186/s40164-020-00197-9

6. Shaulian, E., & Karin, M. (2001). AP-1 in cell proliferation and survival. Oncogene. https://doi.org/10.1038/sj.onc.1204383

7. Chung L. (2015). A Brief Introduction to the Transduction of Neural Activity into Fos Signal. Development & Reproduction. https://doi.org/10.12717/DR.2015.19.2.061


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.

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Publications for c-Fos Antibody (NBP1-89065)(3)

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FAQs for c-Fos Antibody (NBP1-89065). (Showing 1 - 1 of 1 FAQs).

  1. I am looking for some c-fos antibodies that could work in IHC.
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Gene Symbol FOS