Human RLK/TXK Antibody

Catalog # Availability Size / Price Qty
Human RLK/TXK Antibody in Data
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Product Details
Supplemental Products

Human RLK/TXK Antibody Summary

Species Reactivity
Detects human RLK/TXK in direct ELISAs and Western blots.
Monoclonal Mouse IgG2B Clone # 674801
Protein A or G purified from hybridoma culture supernatant
E.coli-derived recombinant human RLK/TXK
Accession # P42681
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.


Recommended Concentration
Western Blot
1 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 Example

Western Blot Detection of Human RLK/TXK antibody by Western Blot. View Larger

Detection of Human RLK/TXK by Western Blot. Western blot shows lysates of Jurkat human acute T cell leukemia cell line and human primary differentiated Th2 cells. PVDF Membrane was probed with 1 µg/mL of Human RLK/TXK Monoclonal Antibody (Catalog # MAB6520) followed by HRP-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # HAF007). Specific bands were detected for RLK/TXK at approximately 58 and 65 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.

Reconstitution Calculator

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.


Preparation and Storage

Sterile PBS to a final concentration of 0.5 mg/mL.
Reconstitution Buffer Available
Reconstitution Buffer 1 (PBS)
Catalog #
Size / Price
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: RLK/TXK

RLK (resting lymphocyte kinase), also called TXK (T cell-expressed kinase) or PTK4, is a protein tyrosine kinase of the TEK family. It is expressed in T cells and some myeloid cells, especially in Th1 cells in inflammatory diseases such as rheumatoid arthritis and Behcet’s disease. Upon TCR stimulation, it translocates to the nucleus and induces IFN-gamma production. An alternate start site creates a resident nuclear 55 kDa form in addition to the larger (~58 kDa) form that is cytoplasmic or targeted to the plasma membrane via palmitoylation of a cysteine string motif. The region used as an immunogen is common to both forms and shares 79% and 81% amino acid identity with mouse and rat RLK, respectively.


Long Name
Resting Lymphocyte Kinase
Entrez Gene IDs
7294 (Human)
Alternate Names
BTKL; BTKLEC; EC 2.7.10; MGC22473; Protein-tyrosine kinase 4; PSCTK5; PTK4 protein tyrosine kinase 4; PTK4; RLK; TKL; TXK tyrosine kinase; TXK; tyrosine kinase; tyrosine-protein kinase TXK

Product Datasheets


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Isotype Controls

Reconstitution Buffers

Secondary Antibodies

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