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Key Documents

CBL218-I

Sigma-Aldrich

Anti-Keratin K3/K76 Antibody, clone AE5

clone AE5, from mouse

Synonym(s):

65 kDa cytokeratin, Cytokeratin-3, CK-3, Keratin-3, K3, Type-II keratin Kb3

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About This Item

UNSPSC Code:
12352203
eCl@ss:
32160702
NACRES:
NA.41

biological source

mouse

Quality Level

antibody form

purified immunoglobulin

antibody product type

primary antibodies

clone

AE5, monoclonal

species reactivity

rabbit, bovine

technique(s)

immunofluorescence: suitable
immunohistochemistry: suitable
western blot: suitable

isotype

IgG1κ

NCBI accession no.

UniProt accession no.

shipped in

wet ice

target post-translational modification

unmodified

Gene Information

human ... KRT3(3850)

General description

Cytokeratin 3, also known as 65kDa Cytokeratin or Keratin K3 is a specific keratin found primarily in the corneal epithelium and minorly in other epithelium like that of the esophagus. The corneal epithelium tissue forms the outermost layer of the cornea, which is the clear front covering of the eye. Keratins are divided into two primary types based upon their isoelectric mobility and size, acidic, or type 1:40-55kDa, and basic to neutral or type 2, 56-70kDa. Cytokeratin 3 is a type II cytokeratin. Type II cytokeratins form pairs with other cytokeratins. Cytokeratin 3 is expressed in the corneal epithelium with Cytokeratin 12. Together Cytokeratin 3 and Cytokeratin 12 form molecules known as intermediate filaments. These filaments assemble into strong networks that provide strength and resilience to the corneal epithelium. Mutations in Cytokeratin 3 have been associated with Meesmann′s Corneal Dystrophy a disease characterized by fragility of the anterior corneal epithelium.

Immunogen

Whole cells corresponding to Rabbit Keratin, type II cytosleletal 3.

Application

Immunohistochemistry Analysis: A 1:1000 dilution from a representative lot detected Keratin K3/K76 in bovine cornea epithelial cells.
Immunohistochemistry Analysis: A representative lot was used by an independent laboratory in Keratin 3 expressed epithelial cells on the surface of submerged and AL explants, indicating that they were derived from limbal progenitor cells via migration. (Kawakita, T., et al. (2005) Am J Pathol, 167:381-93.).
Western Blotting Analysis: A representative lot was used by an independent laboratory in Rabbit epithelial Keratin lysate. (Schermer, A, et al. (1986) J. Cell Biol., 103: 49-62).
Western Blotting Analysis: A representative lot was used by an independent laboratory in rabbit corneal tissue lysate. (Cooper, D., et al. (1986) J. Biol. Chem., 261: 4646-54).
Immunocytochemistry Analysis: A representative lot was used by an independent laboratory in human limbal stem cells cultured in medium supplemented with human EGF. (Sharifi, A.M., et al. (2010) Biocell. 34(1):53-55).
Immunofluorescence Analysis: A representative lot was used by an independent laboratory in rabbit corneal and limbal tissues, limbal explant, and epithelial outgrowth on human AM. (Wang D.Y., et al. (2003) Invest Ophthalmol Vis Sci. 44(11):4698-704).
Immunofluorescence Analysis: A representative lot was used by an independent laboratory inRabbit corneal epithelial Keratin cells. (Schermer, A, et al. (1986) J. Cell Biol., 103: 49-62).
Research Category
Cell Structure
Research Sub Category
Cytokeratins
This Anti-Keratin K3/K76 Antibody, clone AE5 is validated for use in Western Blotting and Immunohistochemistry and Immunofluorescence for the detection of Keratin K3/K76.

Quality

Evaluated by Western Blotting in Rabbit eye (cornea) cell lysate.

Western Blotting Analysis: 0.05 µg/mL of this antibody detected Keratin K3/K76 in 10 µg of Rabbit eye (cornea) cell lysate.

Target description

~60 kDa observed

Linkage

Replaces: CBL218

Physical form

Format: Purified
Protein G Purified
Purified mouse monoclonal IgG1κ in buffer containing 0.1 M Tris-Glycine (pH 7.4), 150 mM NaCl with 0.05% sodium azide.

Storage and Stability

Stable for 1 year at 2-8°C from date of receipt.

Other Notes

Concentration: Please refer to lot specific datasheet.

Disclaimer

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.

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Storage Class Code

12 - Non Combustible Liquids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Intrastromal invasion by limbal epithelial cells is mediated by epithelial-mesenchymal transition activated by air exposure.
Kawakita, T; Espana, EM; He, H; Li, W; Liu, CY; Tseng, SC
The American Journal of Pathology null
Differentiation-related expression of a major 64K corneal keratin in vivo and in culture suggests limbal location of corneal epithelial stem cells.
Schermer, A; Galvin, S; Sun, TT
The Journal of cell biology null
Propagation and phenotypic preservation of rabbit limbal epithelial cells on amniotic membrane.
Wang, DY; Hsueh, YJ; Yang, VC; Chen, JK
Investigative Ophthalmology & Visual Science null
Monoclonal antibody analysis of bovine epithelial keratins. Specific pairs as defined by coexpression.
Cooper, D and Sun, T T
The Journal of Biological Chemistry, 261, 4646-4654 (1986)
Sarbani Hazra et al.
Scientific reports, 6, 21840-21840 (2016-02-26)
Successful repair of a damaged corneal surface is a great challenge and may require the use of a scaffold that supports cell growth and differentiation. Amniotic membrane is currently used for this purpose, in spite of its limitations. A thin

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