Human Cytokeratin 19 Antibody

  
  • Species Reactivity
    Human
  • Specificity
    Detects human Cytokeratin 19 in direct ELISAs and Western blots.
  • Source
    Monoclonal Mouse IgG2A Clone # 963420
  • Purification
    Protein A or G purified from hybridoma culture supernatant
  • Immunogen
    E.coli-derived recombinant human Cytokeratin 19
    Gln311-Lys370
    Accession # P08727
  • Formulation
    Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
  • Label
    Unconjugated
Applications
  •  
    Recommended
    Concentration
    Sample
  • Western Blot
    0.25 µg/mL
    See below
  • Immunohistochemistry
    5-25 µg/mL
    See below
  • Immunocytochemistry
    5-25 µg/mL
    See below
Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.
Data Examples
Detection of Human Cytokeratin 19 by Western Blot. Western blot shows lysates of HT‑29 human colon adenocarcinoma cell line, ZR‑75 human breast cancer cell line, DU145 human prostate carcinoma cell line, MCF‑7 human breast cancer cell line, and A431 human epithelial carcinoma cell line. PVDF membrane was probed with 0.25 µg/mL of Mouse Anti-Human Cytokeratin 19 Monoclonal Antibody (Catalog # MAB35061) followed by HRP-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # HAF018). A specific band was detected for Cytokeratin 19 at approximately 40 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.
Immunocytochemistry
Cytokeratin 19 in MCF‑7 Human Cell Line. Cytokeratin 19 was detected in immersion fixed MCF‑7 human breast cancer cell line using Mouse Anti-Human Cytokeratin 19 Monoclonal Antibody (Catalog # MAB35061) at 8 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Mouse IgG Secondary Antibody (red; Catalog # NL007) and counterstained with DAPI (blue). Specific staining was localized to cytoplasm. View our protocol for Fluorescent ICC Staining of Cells on Coverslips.
Immunohistochemistry
Cytokeratin 19 in Human Breast Cancer Tissue. Cytokeratin 19 was detected in immersion fixed paraffin-embedded sections of human breast cancer tissue using Mouse Anti-Human Cytokeratin 19 Monoclonal Antibody (Catalog # MAB35061) at 5 µg/mL for 1 hour at room temperature followed by incubation with the Anti-Mouse IgG VisUCyte™ HRP Polymer Antibody (Catalog # VC001). Tissue was stained using DAB (brown) and counterstained with hematoxylin (blue). Specific staining was localized to cytoplasm. View our protocol for IHC Staining with VisUCyte HRP Polymer Detection Reagents.
Preparation and Storage
  • Reconstitution
    Reconstitute at 0.5 mg/mL in sterile PBS.
  • Shipping
    The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
  • Stability & Storage
    Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
    • 12 months from date of receipt, -20 to -70 °C as supplied.
    • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
    • 6 months, -20 to -70 °C under sterile conditions after reconstitution.
Background: Cytokeratin 19

Cytokeratin 19 (Keratin, type I cytoskeletal 19; also KRT-19, CK19 and Keratin-19) is a 40-45 kDa, acidic Class I keratin member of the intermediate filament family of proteins. Individual keratins are always expressed in tandem with a second keratin, and these are found in all epithelial cells. The class I KRT-19 heterodimerizes/polymerizes with 50-52 kDa class II KRT-8 (plus KRT-5 and -7) to form 8-10 nm filaments in epidermal stem cells, secretory gland (sweat; mammary; bile duct) simple epithelium, and neuroendocrine epidermal Merkel cells. It may represent a viable marker for skin stem cells. In skin, Cytokeratin 19 forms filaments in the fetal epithelium, and then progressively decreases with age, being virtually absent by age 17. Human Cytokeratin 19 is 400 amino acids (aa) in length. It contains an N-terminal "head" region (aa 1-79) and a subsequent "rod" region (aa 80-387), but is absent a typical C-terminal tail region. Cytokeratin 19 possesses at least 5 utilized phosphorylation sites plus one acetylated Lys residue. Based on other keratins, and the presence of an Asp at position 238, there may be caspase cleavage-generated isoforms. Full length human Cytokeratin 19 (aa 2-400) shares 82% aa sequence identity with mouse Cytokeratin 19.

  • Entrez Gene IDs:
    3880 (Human); 16669 (Mouse)
  • Alternate Names:
    CK19; CK-19; Cytokeratin 19; Cytokeratin-19,40-kDa keratin intermediate filament; EndoC; K19; K19cytokeratin-19; K1CS; keratin 19; keratin, type I cytoskeletal 19; keratin, type I, 40-kd; keratin-19; Krt19; MGC15366
Related Research Areas
Cell and Tissue Staining Kits
Description Application Cat# Citations Images  

Anti-Mouse HRP-DAB Cell & Tissue Staining Kit

CTS002 14
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....
Immunohistochemistry Reagents
Description Application Cat# Citations Images  

Antigen Retrieval Reagent-Universal

CTS015 10
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Antigen Retrieval Reagent-Basic

CTS013 4
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mounting Medium

CTS011 3
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Antigen Retrieval Reagent Sampler (50 mL each)

CTS016
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Antigen Retrieval Reagent-Acidic

CTS014
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

NorthernLights Guard Mounting Media

NL996
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

VisUCyte Antigen Retrieval Reagent-Universal

VCTS023
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

VisUCyte Antigen Retrieval Reagent-Acidic

VCTS022
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

VisUCyte Antigen Retrieval Reagent-Basic

VCTS021
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....
Isotype Controls
Description Application Cat# Citations Images  

Mouse IgG2A Isotype Control

Ctrl MAB003 31  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse IgG2A Isotype Control

Ctrl MAB0031 7  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse IgG2A Isotype Control

Ctrl MAB003R
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....
Secondary Antibodies
Description Application Cat# Citations Images  

Mouse IgG HRP-conjugated Antibody

WB HAF007 25  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse F(ab)2 IgG (H+L) PE-conjugated Antibody

Flow F0102B 10  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Donkey Anti-Mouse IgG NorthernLights™ NL557-conjugate Antibody

Flow, IHC, ICC NL007 9
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse F(ab)2 IgG (H+L) APC-conjugated Antibody

Flow F0101B 2  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Donkey Anti-Mouse IgG NorthernLights™ NL637-conjugated Antibody

Flow, IHC, ICC NL008 8
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Donkey Anti-Mouse IgG NorthernLights™ NL493-conjugated Antibody

Flow, IHC, ICC NL009 5
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse IgG HRP-conjugated Antibody

WB HAF018 5  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Donkey Anti-Mouse IgG Biotinylated Antibody

WB BAF018 1
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse F(ab)2 IgG (H+L) Fluorescein-conjugated Antibody

Flow F0103B 5  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse IgG Antibody

WB AF007 4
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Goat Anti-Mouse IgG Biotinylated Antibody

WB BAF007 4
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse/Rabbit IgG VisUCyte HRP Polymer Antibody

IHC VC002  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Rat Anti-Mouse IgG2A PE-conjugated Antibody

Flow F0129 1  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse F(ab)2 IgG (H+L) PerCP-conjugated Antibody

Flow F0114  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse IgG VisUCyte HRP Polymer Antibody

IHC VC001  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Goat Anti-Mouse IgG Fc Affinity Purified Polyclonal Ab

G-202-C 2
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Mouse IgG2A Antibody

Flow MAB0032  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Rat Anti-Mouse IgG2A APC-conjugated Antibody

Flow F0130  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Rat Anti-Mouse IgG2A PerCP-conjugated Antibody

Flow F0131  
View Sizes & Prices
Catalog# Size Price Stock Quantity
Loading Information....

Have you used Human Cytokeratin 19 Antibody?

Submit a review and receive a $25US/€18/£15/$25CAN amazon gift card if you include an image - $10US/€7/£6/$10CAN Amazon card for reviews without an image. Limited to verified customers in USA, Canada and Europe.

Order Details

Contact Information

Calculators

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

=
÷
R&D Systems Guarantee

Monoclonal
Antibody
Panels For
Screening

Learn More
Monoclonal Antibodies

Feedback

Customer Information