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ZRB1688

Sigma-Aldrich

Anti-Cytokeratin-8 Antibody, clone 2D17 ZooMAb® Rabbit Monoclonal

enhanced validation
greener alternative

recombinant, expressed in HEK 293 cells

Synonym(s):

Keratin;type II cytoskeletal 8;CK-8;Keratin-8;K8;Type-II keratin Kb8

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About This Item

UNSPSC Code:
12352203
NACRES:
NA.41

biological source

rabbit

Quality Level

recombinant

expressed in HEK 293 cells

conjugate

unconjugated

antibody form

purified antibody

antibody product type

primary antibodies

clone

2D17, recombinant monoclonal

description

recombinant, expressed in HEK 293 cells

product line

ZooMAb® learn more

form

lyophilized

mol wt

calculated mol wt 53.70 kDa
observed mol wt ~54 kDa

purified by

using Protein A

species reactivity

human

species reactivity (predicted by homology)

monkey

packaging

antibody small pack of 25 μL

greener alternative product characteristics

Waste Prevention
Designing Safer Chemicals
Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

enhanced validation

recombinant expression
Learn more about Antibody Enhanced Validation

sustainability

Greener Alternative Product

technique(s)

affinity binding assay: suitable
flow cytometry: suitable
immunocytochemistry: suitable
immunohistochemistry (formalin-fixed, paraffin-embedded sections): suitable
western blot: suitable

isotype

IgG

epitope sequence

C-terminus

Protein ID accession no.

UniProt accession no.

greener alternative category

shipped in

ambient

storage temp.

2-8°C

target post-translational modification

unmodified

General description

We are committed to bringing you greener alternative products, which adhere to one or more of The 12 Principles of Green Chemistry.This antibody is Preservative-free, produced without the harm or sacrifice of animals and exceptionally stable to allow for ambient shipping and storage if needed and thus aligns with "Waste Prevention", "Designing Safer Chemicals" and "Design for Energy Efficiency". Click here for more information.
ZooMAb® antibodies represent an entirely new generation of recombinant monoclonal antibodies.Each ZooMAb® antibody is manufactured using our proprietary recombinant expression system, purified to homogeneity, and precisely dispensed to produce robust and highly reproducible lot-to-lot consistency. Only top-performing clones are released for use by researchers. Each antibody is validated for high specificity and affinity across multiple applications, including its most commonly used application. ZooMAb® antibodies are reliably available and ready to ship when you need them.

Specificity

Clone 2D17 is a ZooMAb® Rabbit recombinant monoclonal antibody that specifically detects Cytokeratin-8. It targets an epitope within 20 amino acids from the C-terminal region.

Immunogen

KLH-conjugated linear peptide corresponding to 20 amino acids from the C-terminal region of human Cytokeratin-8.

Application

Quality Control Testing

Evaluated by Western Blotting in HepG2 cell lysate.

Western Blotting Analysis: A 1:1,000 dilution of this antibody detected Cytokeratin-8 in HepG2 cell lysate.

Tested applications


Immunocytochemistry Analysis: A 1:100 dilution from a representative lot detected Cytokeratin-8 in MCF-7 cells.

Immunohistochemistry (Paraffin) Analysis: A 1:100 dilution from a representative lot detected Cytokeratin-8 in human prostate tissue sections.

Affinity Binding Assay: A representative lot of this antibody bound Cytokeratin-8 peptide with a KD of 2.0 x 10-7 in an affinity binding assay.

Flow Cytometry Analysis: 0.1 μg from a representative lot detected Cytokeratin-8 in one million MCF-7 cells.

Note: Actual optimal working dilutions must be determined by end user as specimens, and experimental conditions may vary with the end user

Target description

Keratin, type II cytoskeletal 8 (UniProt: P05787; also known as Cytokeratin-8, CK-8, Keratin-8, K8, Type-II keratin Kb8) is encoded by the KRT8 (also known as CYK8) gene (Gene ID: 3856) in human. Cytokeratins belong to a diverse group of intermediate filaments that participate in differentiation and maintain the structural integrity of epithelial cells. They share a common structural organization: a central -helical rod domain flanked by head and tail domains. An important unique feature of cytokeratins is their epithelial cell-type-specific expression. CK8 is expressed in abundance in the epithelia of colon, bladder, ileum, and stomach. It is a type II, neutral to basic protein that together with cytokeratin-19 (KRT19) helps to link the contractile apparatus to dystrophin at the costameres of striated muscle. CK-8 can undergo phosphorylation on three major serine residues: Serine 23, 431, and 73. Serine 23 is highly conserved in all type II keratins. Phosphorylation at serine 73 is reported to increase during cellular stress. However, under normal conditions serine 73 remains largely dephosphorylated. It can also undergo O-glycosylation in a cell cycle-dependent manner and glycosylation increases its solubility and reduces stability by inducing proteasomal degradation. CK8 expression has been correlated with malignancy in leukoplakia and carcinomas of the head and neck and its expression has been observed in all non-small-cell lung cancers. This ZooMAb® recombinant monoclonal antibody, generated by our propriety technology, offers significantly enhanced specificity, affinity, reproducibility, and stability over conventional monoclonals.

Physical form

Purified recombinant rabbit monoclonal antibody IgG, lyophilized in PBS, 5% Trehalose, normal appearance a coarse or translucent resin. The PBS/trehalose components in the ZooMAb formulation can have the appearance of a semi-solid (bead like gel) after lyophilization. This is a normal phenomenon. Please follow the recommended reconstitution procedure in the data sheet to dissolve the semi-solid, bead-like, gel-appearing material. The resulting antibody solution is completely stable and functional as proven by full functional testing. Contains no biocide or preservatives, such as azide, or any animal by-products. Larger pack sizes provided as multiples of 25 μL.

Reconstitution

30 μg/mL after reconstitution at 25 μL per vial. Please refer to guidance on suggested starting dilutions and/or titers per application and sample type.

Storage and Stability

Recommend storage of lyophilized product at 2-8°C; Before reconstitution, micro-centrifuge vials briefly to spin down material to bottom of the vial; Reconstitute each vial by adding 25 μL of filtered lab grade water or PBS; Reconstituted antibodies can be stored at 2-8°C, or -20°C for long term storage. Avoid repeated freeze-thaws.

Legal Information

ZooMAb is a registered trademark of Merck KGaA, Darmstadt, Germany

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

13 - Non Combustible Solids

wgk_germany

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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