Invitrogen™ Human Cytokeratin 18 Recombinant Protein

Catalog No.	Quantity
PIRP75534	100 μg

Catalog No. PIRP75534 Supplier Invitrogen™ Supplier No. RP75534

Description

Recombinant Protein

This product contains purified recombinant human Cytokeratin-18 protein with an N-terminal hexahistidine tag. This product may be used as a positive control in many immunological assays.

Cytokeratin 18 (Keratin 18, KRT18, type I cytoskeletal 18) belongs to the type A (acidic) subfamily of low molecular weight keratins, exists in combination with cytokeratin 8. Tissues from gastrointestinal tract, respiratory tract and urogenital tract, as well as endocrine and exocrine tissues and mesothelial cells are positive for cytokeratin 18. Further, cytokeratin 18 is found primarily in non-squamous epithelia and is present in a majority of adenocarcinomas and ductal carcinomas, but not in squamous cell carcinomas. Hepatocellular carcinomas express only cytokeratins 8 and 18. Mutations in the cytokeratin 18 gene have been linked to cryptogenic cirrhosis. Two transcript variants encoding the same protein have been found for the cytokeratin 18 gene. Cytokeratin subtype expression patterns are used to an increasing extent in the distinction of different types of epithelial malignancies. The cytokeratin antibodies are not only of assistance in the differential diagnosis of tumors using immunohistochemistry on tissue sections, but are also a useful tool in cytopathology and flow cytometric assays.

Specifications

• Accession Number: P05783
• Concentration: 0.8 mg/mL
• For Use With (Application): Control, Western Blot
• Formulation: tris HCl with 50% glycerol, 5 mM EDTA and no preservative; pH 8
• Gene ID (Entrez): 3875
• Name: Human Cytokeratin 18
• pH Range: 8
• Quantity: 100 μg
• Source: E. coli
• Immunogen: N/A
• Regulatory Status: RUO
• Gene Alias: cb83; Cell proliferation-inducing gene 46 protein; CK 18; CK18; CK-18; CYK18; cytokeratin 18; cytokeratin endo B; cytokeratin type -1; DAPK-1; Cytokeratin18; cytokeratin-18; dapk1; dorsal aorta proneprin kinesin-1; DreK18; Endo B; I79_023185; K 18; K18; keratin 18; keratin 18, type I; keratin 18 A, tandem duplicate 1; keratin complex 1, acidic, gene 18; keratin D; Keratin, type I cytoskeletal 18; Keratin18; keratin-18; Kerd; KRT 18; Krt1-18; KRT18; krt18 {ECO:0000250; krt18a0.1; LOC100008885; PIG46; sb:cb83; type I cytoskeletal 18; UniProtKB:P05783}; wu:fa13f02; wu:fb36b04
• Common Name: Cytokeratin 18
• Gene Symbol: KRT18
• Conjugate: Unconjugated
• Species: E. coli
• Recombinant: Recombinant
• Protein Tag: His-tag
• Sequence: Amino acids Met1- His430 containing an N-terminal His-tag
• Content And Storage: -20°C, Avoid Freeze/Thaw Cycles
• Expression System: E. coli
• Form: Liquid
• Protein Subtype: Recombinant
• Purity or Quality Grade: >95%, by SDS-PAGE under reducing conditions