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c-Fos Antibody

Novus Biologicals, part of Bio-Techne | Catalog # NBP2-50057

Novus Biologicals, part of Bio-Techne

Key Product Details

Validated by

Biological Validation

Species Reactivity

Validated:

Human, Mouse, Rat

Cited:

Mouse, Rat

Applications

Validated:

Immunocytochemistry/ Immunofluorescence, Immunohistochemistry, Immunohistochemistry Free-Floating, Western Blot

Cited:

IF/IHC, Immunocytochemistry/ Immunofluorescence, Immunohistochemistry, Immunohistochemistry-Frozen, Western Blot

Label

Unconjugated

Antibody Source

Polyclonal Rabbit IgG

Concentration

1 mg/ml

Product Specifications

Immunogen

This c-Fos Antibody was developed against recombinant full length human c-Fos. [UniProt# P01100]

Clonality

Polyclonal

Host

Rabbit

Isotype

IgG

Theoretical MW

50-65 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.

Scientific Data Images for c-Fos Antibody

Immunocytochemistry/ Immunofluorescence: c-Fos Antibody [NBP2-50057]

Immunocytochemistry/ Immunofluorescence: c-Fos Antibody [NBP2-50057]

Immunocytochemistry/Immunofluorescence: c-Fos Antibody [NBP2-50057] - Analysis of HeLa cells stained with rabbit pAb to c-FOS, NBP2-50057, dilution 1:5,000 in red, and mouse mAb to tubulin, dilution 1:10,000, in green. The blue is DAPI staining of nuclear DNA. HeLa cells were kept in fetal bovine serum (FBS) free media for 36 hours. Then the cells were treated with PBS (A), as a control, or stimulated with 20% FBS (B) for 30 min. c-FOS antibody labels only the nuclei of stimulated cells. Mouse hippocampus (C) or olfactory bulb sections (D) stained with NBP2-50057, dilution 1:20,000 in red, and mouse mAb to NF-L, dilution 1:5,000, in green. The blue is DAPI staining of nuclear DNA. Following transcardial perfusion of mouse with 4% paraformaldehyde, brain was post fixed for 24 hours, cut to 45uM, and free-floating sections were stained with above antibodies. The c-FOS antibody stains only nuclei of spontaneously active neurons. NF-L is expressed in axons of neuronal cells.
Western Blot: c-Fos Antibody [NBP2-50057]

Western Blot: c-Fos Antibody [NBP2-50057]

Western Blot: c-Fos Antibody [NBP2-50057] - Analysis of cell lysates using rabbit pAb to c-FOS, NBP2-50057, dilution 1:5,000, in green, and mouse mAb to GAPDH, dilution 1:5,000, in red, used as a loading control. [1] protein standard (red), [2] HeLa cells grown in FBS free media, [3] HeLa cells stimulated with 20% FBS for 2 hours after being in FBS free media for 36 hours, [4] rat cortical neurons, [5] rat cortical neurons treated with membrane depolarization buffer for 5 hours. Multiple bands at 50-65 kDa in stimulated or treated cell lysates, correspond to different isoforms of the c-FOS protein

Applications for c-Fos Antibody

Application
Recommended Usage

Immunocytochemistry/ Immunofluorescence

1:5000-1:20000

Immunohistochemistry

1:20000-1:50000

Western Blot

1:1000 - 1:2000
Application Notes
In WB, this antibody recognizes bands with apparent molecular weights of 50-65 kDa, representing multiple forms of the c-Fos protein.

Formulation, Preparation, and Storage

Purification

Immunogen affinity purified

Formulation

50% PBS, 50% glycerol

Preservative

0.035% Sodium Azide

Concentration

1 mg/ml

Shipping

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: 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).

References

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

Long Name

FBJ/Finkel–Biskis–Jinkins Murine Osteosarcoma Viral Oncogene Homolog

Alternate Names

cFos, FOS, G0S7

Gene Symbol

FOS

UniProt

Additional c-Fos Products

Product Documents for c-Fos Antibody

Certificate of Analysis

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

Product Specific Notices for c-Fos Antibody

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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