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The term cytokeratin began to be used in the late 1970s, when the protein subunits of keratin intermediate filaments inside cells were first being identified and characterized. [2] In 2006 a new systematic nomenclature for mammalian keratins was created, and the proteins previously called cytokeratins are simply called keratins (human ...
Cytokeratin 5/6 (CK5/6) is a biomarker that has emerged as a valuable tool in distinguishing epithelioid pleural mesothelioma from metastatic adenocarcinoma. In a study comparing its effectiveness with other markers, CK5/6 showed high sensitivity, staining positively in 92% of epithelioid pleural mesothelioma cases.
34βE12, often written as 34betaE12 and also known as CK34βE12 and keratin 903 (CK903), is an antibody specific for high molecular weight cytokeratins 1, 5, 10 and 14. [1] [2]It is sometimes, less precisely, referred to as high-molecular weight keratin (HMWK) and high-molecular weight cytokeratin (HMWCK).
The antibody cocktail binds to cytokeratin 1 - 8, 10, 14 - 16 and 19 (but not CK17 or CK18). [1] It is therefore used as a marker of carcinomas, such as depth of invasion and metastases. [ 1 ] For example, it is both relatively sensitive and specific for detection of breast cancer metastasis to sentinel lymph nodes .
3880 16669 Ensembl ENSG00000171345 ENSMUSG00000020911 UniProt P08727 P19001 RefSeq (mRNA) NM_002276 NM_008471 NM_001313963 RefSeq (protein) NP_002267 NP_001300892 NP_032497 Location (UCSC) Chr 17: 41.52 – 41.53 Mb Chr 11: 100.03 – 100.04 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Keratin, type I cytoskeletal 19 (Keratin-19)) also known as cytokeratin-19 (CK-19) is a 40 kDa ...
Keratin, type II cytoskeletal 7 also known as cytokeratin-7 (CK-7) or keratin-7 (K7) or sarcolectin (SCL) is a protein that in humans is encoded by the KRT7 gene. [5] [6] [7] Keratin 7 is a type II keratin. It is specifically expressed in the simple epithelia lining the cavities of the internal organs and in the gland ducts and blood vessels.
Keratin, type II cytoskeletal 8 also known as cytokeratin-8 (CK-8) or keratin-8 (K8) is a keratin protein that is encoded in humans by the KRT8 gene. It is often paired with keratin 18 . Utility as an immunohistochemical stain
Type II Keratins are divided into 2 subtypes: Type IIA Keratins and Type IIB Keratins. Type 2A keratins are expressed in tissues that require high levels of mechanical stress, such as the soles of the feet, while type 2B keratins are expressed in tissues that are subject to less stress, such as the palms of the hands.