Product Name	CK20(ready to use)
Chinese Name	细胞角蛋白20单克隆抗体（工作液）
Alias	Cytokeratin 20; CK 20; CK20; Cytokeratin20; K20; Keratin 20; Keratin type I cytoskeletal 20; Keratin20; KRT 20; KRT 21; KRT20; KRT21; MGC35423; Protein IT; K1C20_HUMAN.
Research Area	Tumour  immunology
Immunogen Species	Mouse
Clonality	Monoclonal
Clone NO.	6A12
Applications	IHC-P=1:100-500 IHC-F=1:100-500 ICC=1:100-500 IF=1:100-500 （Paraffin sections need antigen repair） not yet tested in other applications. optimal dilutions/concentrations should be determined by the end user.
Theoretical molecular weight	48kDa
Cellular localization	cytoplasmic
Form	Liquid
immunogen	KLH conjugated synthetic peptide derived from human CK20
Lsotype	IgG2a
Purification	affinity purified by Protein G
Buffer Solution	0.01M PBS(pH7.4) with 1% BSA and 0.1% Proclin300
Storage	Store at 2-8 °C for one year. Avoid repeated freeze/thaw cycles.
Attention	This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.
PubMed	PubMed
Product Detail	Cytokeratin 20 is a type I keratin which is primarily expressed in gastric and intestinal epithelium, urothelium, and Merkel-cells. The keratins are intermediate filament proteins responsible for the structural integrity of epithelial cells and are subdivided into cytokeratins and hair keratins. The type I cytokeratins consist of acidic proteins which are arranged in pairs of heterotypic keratin chains. Their genes are clustered in a region of chromosome 17q12-q21. Cytokeratin 20 is a major cellular protein of mature enterocytes and goblet cells and is specifically expressed in the gastric and intestinal mucosa. It is also expressed in adenocarcinomas of the colon, stomach, pancreas and the bile system and is present in mucinous ovarian tumors, transitional-cell and Merkel-cell carcinomas. Notably, the squamous cell carcinomas and adenocarcinomas of the breast, lung, and endometrium, non-mucinous tumors of the ovary, and small cell carcinomas lack cytokeratin 20. Function: Plays a significant role in maintaining keratin filament organization in intestinal epithelia. When phosphorylated, plays a role in the secretion of mucin in the small intestine (By similarity). Subunit: Heterotetramer of two type I and two type II keratins. Associates with KRT8. Subcellular Location: Cytoplasm. Tissue Specificity: Expressed predominantly in the intestinal epithelium. Expressed in luminal cells of colonic mucosa. Also expressed in the Merkel cells of keratinized oral mucosa; specifically at the tips of some rete ridges of the gingival mucosa, in the basal layer of the palatal mucosa and in the taste buds of lingual mucosa. Post-translational modifications: Hyperphosphorylation at Ser-13 occurs during the early stages of apoptosis but becomes less prominent during the later stages. Phosphorylation at Ser-13 also increases in response to stress brought on by cell injury (By similarity). Proteolytically cleaved by caspases during apoptosis. Cleavage occurs at Asp-228. Similarity: Belongs to the intermediate filament family. SWISS: P35900 Gene ID: 54474 Database links: Entrez Gene: 54474 Human Entrez Gene: 66809 Mouse Entrez Gene: 286912 Rat Omim: 608218 Human SwissProt: P35900 Human SwissProt: Q9D312 Mouse SwissProt: P25030 Rat Unigene: 84905 Human Unigene: 28042 Mouse Unigene: 9887 Rat
Product Picture	Paraformaldehyde-fixed, paraffin embedded (human colon carcinoma); Antigen retrieval by boiling in sodium citrate buffer (pH6.0) for 15min; Block endogenous peroxidase by 3% hydrogen peroxide for 20 minutes; Blocking buffer (normal goat serum) at 37°C for 30min; Antibody incubation with (CK20) Monoclonal Antibody, Unconjugated (BH0221) at 1:200 overnight at 4°C, followed by operating according to SP Kit(Mouse)(sp-0024) instructionsand DAB staining. Paraformaldehyde-fixed, paraffin embedded (human colon); Antigen retrieval by boiling in sodium citrate buffer (pH6.0) for 15min; Block endogenous peroxidase by 3% hydrogen peroxide for 20 minutes; Blocking buffer (normal goat serum) at 37°C for 30min; Antibody incubation with (CK20) Monoclonal Antibody, Unconjugated (BH0221) at 1:200 overnight at 4°C, followed by operating according to SP Kit(Mouse)(sp-0024) instructionsand DAB staining.

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