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MABT338-100UG Anti-phospho-cytokeratin-8 (K8) (Ser431) Antibody, clone 5B3

Anti-phospho-cytokeratin-8 (K8) (Ser431), clone 5B3, Cat. No. MABT338, is a mouse monoclonal antibody that detects type II Cytokeratin-8 phopshorylated on serine 431 and has been tested for use in Immunofluorescence and Western Blotting.

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MABT338-100UG
100 μg  
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Overview

Replacement Information
Description
Catalogue NumberMABT338-100UG
DescriptionAnti-phospho-cytokeratin-8 (K8) (Ser431) Antibody, clone 5B3
Alternate Names
  • Keratin
  • type II cytoskeletal 8
  • CK-8
  • Keratin-8
  • K8
  • Type-II keratin Kb80
Background InformationKeratin, type II cytoskeletal 8 (UniProt: P05787; also known as Cytokeratin-8, CK-8 Keratin-8, K8, Type-II keratin Kb80) is encoded by the KRT8 (also known as CYK8) gene (Gene ID: 3856) in human. Cytokeratin-8 is a type II, neutral to basic, protein of the intermediate filament family that together with Cytokeratin-19 (KRT19) helps to link the contractile apparatus to dystrophin at the costameres of striated muscle. Cytokeratin-8 can undergo phosphorylation on three major serine residues: Serine 23, 431, and 73. Serine 23 is shown to be highly conserved in all type II keratins. Phosphorylation at Serine 431 is reported to increase during mitosis and upon treatment with epidermal growth factor. Cytokeratin-8 can also undergo O-glycosylation in a cell cycle-dependent manner and glycosylation increases its solubility and reduces stability by inducing proteasomal degradation. Mutations in KRT8 gene have been linked to liver cirrhosis that is characterized by severe panlobular liver-cell swelling with Mallory body formation, prominent pericellular fibrosis, and marked deposits of copper. Two isoforms of Cytokeratin-8 have been described that are produced by alternative splicing.
References
Product Information
FormatPurified
PresentationPurified mouse monoclonal antibody IgG1 in buffer containing 0.1 M Tris-Glycine (pH 7.4), 150 mM NaCl with 0.05% sodium azide.
Applications
ApplicationAnti-phospho-cytokeratin-8 (K8) (Ser431), clone 5B3, Cat. No. MABT338, is a mouse monoclonal antibody that detects type II Cytokeratin-8 phopshorylated on serine 431 and has been tested for use in Immunofluorescence and Western Blotting.
Key Applications
  • Immunofluorescence
  • Western Blotting
Application NotesImmunofluorescence Analysis: A representative lot detected phospho-cytokeratin-8 (K8) (Ser431) in Immunofluorescence applications (Ku, N.O., et. al. (1997). J Biol Chem. 272(11):7556-64).

Western Blotting Analysis: A representative lot detected phospho-cytokeratin-8 (K8) (Ser431) in Western Blotting applications (Yoon, K.H., et. al. (2001). J Cell Biol. 153(3):503-16; Ridge, K.M., et. al. (2005). J Biol Chem. 280(34):30400-5; Ku, N.O., et. al. (1997). J Biol Chem. 272(11):7556-64).
Biological Information
ImmunogenCytokeratin-8/18 purified from okadaic acid-treated HT29 cells.
Clone5B3
ConcentrationPlease refer to lot specific datasheet.
HostMouse
SpecificityClone 5B3 specifically detects cytokeratin-8 phosphorylated on serine 431.
IsotypeIgG1κ
Species Reactivity
  • Human
  • Mouse
Species Reactivity NoteMouse, Human.
Antibody TypeMonoclonal Antibody
Entrez Gene Number
Gene Symbol
  • KRT8
  • CYK8
Modifications
  • Phosphorylation
Purification MethodProtein G purified
UniProt Number
Molecular Weight~53 kDa observed; 53.70 kDa calculated. Uncharacterized bands may be observed in some lysate(s).
Physicochemical Information
Dimensions
Materials Information
Toxicological Information
Safety Information according to GHS
Safety Information
Product Usage Statements
Quality AssuranceEvaluated by Western Blotting in lysates from HeLa cells treated with Calyculin A/Okadaic Acid.

Western Blotting Analysis: 2 µg/mL of this antibody detected phospho-cytokeratin-8 (K8) (Ser431) in lysate from HeLa cells treated with Calyculin A/Okadaic Acid.
Usage Statement
  • 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 and Shipping Information
Storage ConditionsStable for 1 year at 2-8°C from date of receipt.
Packaging Information
Material Size100 μg
Transport Information
Supplemental Information
Specifications
Global Trade Item Number
Catalog Number GTIN
MABT338-100UG 04054839607783