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Phospho-ALK (Tyr1586) (3B4) Rabbit mAb #3348

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  • WB
Western Blotting Image 1: Phospho-ALK (Tyr1586) (3B4) Rabbit mAb
Western blot analysis of Sup-M2 cell lysate, using Phospho-ALK (Tyr1586) (3B4) Rabbit mAb (A and B), and ALK Antibody (C and D).The phospho-specificity of this antibody was characterized by treating the membrane with calf intestinal alkaline phosphatase (CIP) (B and D) after Western transfer.

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Supporting Data

REACTIVITY H
SENSITIVITY Endogenous
MW (kDa) 80 (NPM-ALK) 220 (ALK)
Source/Isotype Rabbit IgG
Application Key:
  • WB-Western Blotting 
Species Cross-Reactivity Key:
  • H-Human 
  • Related Products

Product Information

Product Usage Information

Application Dilution
Western Blotting 1:1000

Storage

Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA, 50% glycerol and less than 0.02% sodium azide. Store at –20°C. Do not aliquot the antibody.

For a carrier free (BSA and azide free) version of this product see product #31282.

Protocol

Specificity / Sensitivity

Phospho-ALK (Tyr1586) (3B4) Rabbit mAb detects ALK only when phosphorylated at Tyr1586 (equivalent to Tyr646 of NPM-ALK). This antibody may cross-react with other activated protein tyrosine kinases including EGFR.

Species Reactivity:

Human

The antigen sequence used to produce this antibody shares 100% sequence homology with the species listed here, but reactivity has not been tested or confirmed to work by CST. Use of this product with these species is not covered under our Product Performance Guarantee.

Species predicted to react based on 100% sequence homology:

Mouse

Source / Purification

Monoclonal antibody is produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Tyr1586 of human ALK.

Background

Anaplastic lymphoma kinase (ALK) is a tyrosine kinase receptor for pleiotrophin (PTN), a growth factor involved in embryonic brain development (1-3). In ALK-expressing cells, PTN induces phosphorylation of both ALK and the downstream effectors IRS-1, Shc, PLCγ, and PI3 kinase (1). ALK was originally discovered as a nucleophosmin (NPM)-ALK fusion protein produced by a translocation (4). Investigators have found that the NPM-ALK fusion protein is a constitutively active, oncogenic tyrosine kinase associated with anaplastic lymphoma (4). Research literature suggests that activation of PLCγ by NPM-ALK may be a crucial step for its mitogenic activity and involved in the pathogenesis of anaplastic lymphomas (5).
A distinct ALK oncogenic fusion protein involving ALK and echinoderm microtubule-associated protein like 4 (EML4) has been described in the research literature from a non-small cell lung cancer (NSCLC) cell line, with corresponding fusion transcripts present in some cases of lung adenocarcinoma. The short, amino-terminal region of the microtubule-associated protein EML4 is fused to the kinase domain of ALK (6-8).

Pathways

Explore pathways related to this product.


For Research Use Only. Not For Use In Diagnostic Procedures.
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