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Rabbit anti-14-3-3 Sigma Antibody, Affinity Purified

Powered by Bethyl Laboratories, Inc.

YWHAS, 14-3-3 sigma, epithelial cell marker protein 1, Stratifin

biological source


Quality Level

antibody form

affinity purified immunoglobulin

antibody product type

primary antibodies


Powered by Bethyl Laboratories, Inc.

species reactivity



immunohistochemistry: 1:2,000-1:10,000
immunoprecipitation (IP): 2-5 μg/mg
western blot: 1:2,000- 1:10,000

accession no.


shipped in

wet ice

storage temp.


Gene Information

human ... SFN(2810)

General description

Rabbit anti-14-3-3 Sigma or stratifin is mapped to human chromosome 1p36.11. 14-3-3σ protein is expressed as seven isoforms and has molecular weight in the range of 25 to 30 kDa. It is an acidic homodimeric protein and harbors pleckstrin homology (PH) domain. 14-3-3σ is highly expressed in epidermis.


The epitope recognized by PLA0201 maps to a region between residue 198 and 248 of human 14-3-3 sigma using the numbering given in entry NP_006133.1 (GeneID 2810).


Rabbit anti-14-3-3 Sigma Antibody, Affinity Purified has been used in the pull down assay for Rho associated coiled-coil containing protein kinase 1 (ROCK1) proteins and heat shock 70 kDa 4 protein (Hsp74) in HCT116 cancer cells.

Biochem/physiol Actions

Rabbit anti-14-3-3 or stratifin participates in several biological events including apoptosis and cell differentiation. It regulates the transcription matrix metallopeptidases (MMPs) in fibroblasts and may serve as therapeutic potential in wound healing. 14-3-3σ is less expressed and is hyper methylated in breast cancer cells. It plays a key role in linking signalling proteins and in the enhancing of protein kinase C functionality. A mutation in the stratifin gene is implicated in epilation phenotype in mice. It interacts with ubiquitin-specific protease 8 (USP8) and is highly expressed in human lung adenocarcinoma.

Physical form

Tris-citrate/phosphate buffer, pH 7 to 8 containing 0.09% Sodium Azide

Other Notes

14-3-3 sigma was identified as an epithelial cell marker. It is part of the 14-3-3 family of proteins in which seven isoforms have been identified: beta, zeta, gamma, eta, epsilon, tau, and sigma. 14-3-3 proteins function as adaptors that bind with a number of partners to mediate various signaling pathways. 14-3-3 sigma is also called stratifin or HME1 and appears to function as a tumor suppressor whose expression can be downregulated via methylation. Loss of 14-3-3 sigma expression results in a defective G2/M phase checkpoint and appears to contribute to both epithelial and non-epithelial tumorigenesis.


Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

Storage Class Code

12 - Non Combustible Liquids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

A mutation in stratifin is responsible for the repeated epilation (Er) phenotype in mice
Herron BJ, et al.
Nature Genetics, 37(11), 1210-1210 (2005)
Qin Ju He et al.
American journal of physiology. Cell physiology, 318(1), C48-C62 (2019-10-17)
We recently published that type 2 diabetes promotes cell centrosome amplification via upregulation of Rho-associated protein kinase 1 (ROCK1) and 14-3-3 protein-σ (14-3-3σ). This study further investigates the molecular mechanisms underlying diabetes-associated centrosome amplification. We found that treatment of cells
The role of stratifin in fibroblast-keratinocyte interaction
Medina A, et al.
Molecular and Cellular Biochemistry, 305(1-2), 255-264 (2007)
Stratifin, a keratinocyte specific 14-3-3 protein, harbors a pleckstrin homology (PH) domain and enhances protein kinase C activity
Dellambra E, et al.
Journal of Cell Science, 108(11), 3569-3579 (1995)
Type 2 diabetes promotes cell centrosome amplification via AKT-ROS-dependent signalling of ROCK1 and 14-3-3sigma
Wang P, et al.
Cellular Physiology and Biochemistry, 47(1), 356-367 (2018)

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