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Cytokeratin 19 Polyclonal antibody

Cytokeratin 19 Polyclonal Antibody for FC, IF, IHC, WB,ELISA

Host / Isotype

Rabbit / IgG


human, mouse, rat and More (1)





Cat no : 14965-1-AP


CK 19, CK19, Cytokeratin 19, K19, K1CS, keratin 19, KRT19

Tested Applications

Positive WB detected inMCF7 cells, HeLa cells, HepG2 cells, BxPC-3 cells
Positive IHC detected inhuman colon tissue, human lung cancer tissue, human liver cancer tissue, human cervical cancer tissue, rat colon tissue, mouse colon tissue
Note: suggested antigen retrieval with TE buffer pH 9.0; (*) Alternatively, antigen retrieval may be performed with citrate buffer pH 6.0
Positive IF detected inHeLa cells
Positive FC detected inMCF-7 cells

Recommended dilution

Western Blot (WB)WB : 1:500-1:3000
Immunohistochemistry (IHC)IHC : 1:1000-1:6400
Immunofluorescence (IF)IF : 1:200-1:800
Sample-dependent, check data in validation data gallery

Product Information

14965-1-AP targets Cytokeratin 19 in WB, IHC, IF, FC,ELISA applications and shows reactivity with human, mouse, rat samples.

Tested Reactivity human, mouse, rat
Cited Reactivity human, monkey, mouse
Host / Isotype Rabbit / IgG
Class Polyclonal
Type Antibody
Immunogen Cytokeratin 19 fusion protein Ag6830
Full Name keratin 19
Calculated molecular weight 44 kDa
Observed molecular weight 40 kDa, 46 kDa
GenBank accession numberBC002539
Gene symbol KRT19
Gene ID (NCBI) 3880
Conjugate Unconjugated
Form Liquid
Purification Method Antigen affinity purification
Storage Buffer PBS with 0.02% sodium azide and 50% glycerol pH 7.3.
Storage ConditionsStore at -20°C. Stable for one year after shipment. Aliquoting is unnecessary for -20oC storage.

Background Information

Keratins are a large family of proteins that form the intermediate filament cytoskeleton of epithelial cells, which are classified into two major sequence types. Type I keratins are a group of acidic intermediate filament proteins, including K9-K23, and the hair keratins Ha1-Ha8. Type II keratins are the basic or neutral courterparts to the acidic type I keratins, including K1-K8, and the hair keratins, Hb1-Hb6. KRT19, one of type I keratins, is specifically expressed in the periderm, the transiently superficial layer that envelopes the developing epidermis. Due to its high sensitivity, KRT19 is the most used marker for detection of tumor cells disseminated in lymph nodes, peripheral blood, and bone marrow of breast cancer patients. This antibody, generated against full length KRT19 protein, also recognizes KRT17, another type I keratin homologous to KRT19.


Product Specific Protocols
WB protocol for Cytokeratin 19 antibody 14965-1-APDownload protocol
IHC protocol for Cytokeratin 19 antibody 14965-1-APDownload protocol
IF protocol for Cytokeratin 19 antibody 14965-1-APDownload protocol
FC protocol for Cytokeratin 19 antibody 14965-1-APDownload protocol
Standard Protocols
Click here to view our Standard Protocols



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