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12298
PhosphoPlus® Chk2 (Thr68) Antibody Duet
Primary Antibodies
Antibody Duet

PhosphoPlus® Chk2 (Thr68) Antibody Duet #12298

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PhosphoPlus® Chk2 (Thr68) Antibody Duet: Image 1

Flow cytometric analysis of HeLa cells, untreated (blue) or treated with UV (100mJ/cm2, 2 hr recovery; green) using Phospho-Chk2 (Thr68) (C13C1) Rabbit mAb (solid lines) or concentration-matched Rabbit (DA1E) mAb IgG XP® Isotype Control #3900 (dashed lines). Anti-rabbit IgG (H+L), F(ab')2 Fragment (Alexa Fluor® 488 Conjugate) was used as a secondary antibody.

PhosphoPlus® Chk2 (Thr68) Antibody Duet: Image 2

Confocal immunofluorescent analysis of HCT 116 (left) and HCT-15 (right) cells using Chk2 (D9C6) XP® Rabbit mAb (green). Actin filaments were labeled with DY-554 phalloidin (red).

PhosphoPlus® Chk2 (Thr68) Antibody Duet: Image 3

Western blot analysis of extracts from control HeLa cells (lane 1) or HeLa cells with a targeted mutation in the gene encoding Chk2 (lane 2) using Chk2 (D9C6) XP® Rabbit mAb (upper) or β-Actin (D6A8) Rabbit mAb #8457 (lower). The change in Chk2 molecular weight in the mutated HeLa cells confirms the specificity of the antibody for Chk2.

PhosphoPlus® Chk2 (Thr68) Antibody Duet: Image 4

Immunohistochemical analysis of paraffin-embedded human breast carcinoma using Phospho-Chk2 (Thr68) (C13C1) Rabbit mAb.

PhosphoPlus® Chk2 (Thr68) Antibody Duet: Image 5

Western blot analysis of extracts from various cell lines using Chk2 (D9C6) XP® Rabbit mAb.

PhosphoPlus® Chk2 (Thr68) Antibody Duet: Image 6

Immunohistochemical analysis of paraffin-embedded human lung carcioma using Chk2 (D9C6) XP® Rabbit mAb.

PhosphoPlus® Chk2 (Thr68) Antibody Duet: Image 7

Immunohistochemical analysis of paraffin-embedded human colon carcinoma, control (left) or λ phosphatase-treated (right), using Phospho-Chk2 (Thr68) (C13C1) Rabbit mAb.

PhosphoPlus® Chk2 (Thr68) Antibody Duet: Image 8

Immunohistochemical analysis of paraffin-embedded human ovarian serous adenocarcinoma using Chk2 (D9C6) XP® Rabbit mAb.

PhosphoPlus® Chk2 (Thr68) Antibody Duet: Image 9

Immunohistochemical analysis of paraffin-embedded human lung carcinoma using Phospho-Chk2 (Thr68) (C13C1) Rabbit mAb.

PhosphoPlus® Chk2 (Thr68) Antibody Duet: Image 10

Immunohistochemical analysis of paraffin-embedded cell pellets, HCT 116 (left) or MDA-MB-231 (right), using Chk2 (D9C6) XP® Rabbit mAb.

PhosphoPlus® Chk2 (Thr68) Antibody Duet: Image 11

Immunohistochemical analysis of paraffin-embedded HT-29 cell pellets, control (left) or UV-treated (right), using Phospho-Chk2 (Thr68) (C13C1) Rabbit mAb.

PhosphoPlus® Chk2 (Thr68) Antibody Duet: Image 12

Immunoprecipitation of Chk2 from 293 cell extracts using Chk2 (D9C6) XP® Rabbit mAb (lane 2). Western blot detection was performed using the same antibody. Lane 1 is 10% input.

PhosphoPlus® Chk2 (Thr68) Antibody Duet: Image 13

Immunoprecipitation of phospho-chk2 from UV-treated HT29 cells using Phospho-Chk2 (Thr68) (C13C1) Rabbit mAb followed by western blot using the same antibody.

PhosphoPlus® Chk2 (Thr68) Antibody Duet: Image 14

Western blot analysis of extracts from HeLa cells, untreated or UV-treated, using Phospho-Chk2 (Thr68) (C13C1) Rabbit mAb.

To Purchase # 12298S
Product # Size Price
12298S
1 Kit $ 527

Product Description

PhosphoPlus® Duets from Cell Signaling Technology (CST) provide a means to assess protein activation status. Each Duet contains an activation-state and total protein antibody to your target of interest. These antibodies have been selected from CST's product offering based upon superior performance in specified applications.

Background

Chk2 is the mammalian orthologue of the budding yeast Rad53 and fission yeast Cds1 checkpoint kinases (1-3). The amino-terminal domain of Chk2 contains a series of seven serine or threonine residues (Ser19, Thr26, Ser28, Ser33, Ser35, Ser50, and Thr68) each followed by glutamine (SQ or TQ motif). These are known to be preferred sites for phosphorylation by ATM/ATR kinases (4,5). After DNA damage by ionizing radiation (IR), UV irradiation, or hydroxyurea treatment, Thr68 and other sites in this region become phosphorylated by ATM/ATR (5-7). The SQ/TQ cluster domain, therefore, seems to have a regulatory function. Phosphorylation at Thr68 is a prerequisite for the subsequent activation step, which is attributable to autophosphorylation of Chk2 at residues Thr383 and Thr387 in the activation loop of the kinase domain (8).

  1. Allen, J.B. et al. (1994) Genes Dev. 8, 2401-2415.
  2. Weinert, T.A. et al. (1994) Genes Dev. 8, 652-665.
  3. Murakami, H. and Okayama, H. (1995) Nature 374, 817-819.
  4. Kastan, M.B. and Lim, D.S. (2000) Nat. Rev. Mol. Cell Biol. 1, 179-186.
  5. Matsuoka, S. et al. (2000) Proc. Natl. Acad. Sci. USA 97, 10389-10394.
  6. Melchionna, R. et al. (2000) Nat. Cell Biol. 2, 762-765.
  7. Ahn, J.Y. et al. (2000) Cancer Res. 60, 5934-5936.
  8. Lee, C.H. and Chung, J.H. (2001) J. Biol. Chem. 276, 30537-30541.

Pathways & Proteins

Explore pathways + proteins related to this product.

Limited Uses

Except as otherwise expressly agreed in a writing signed by a legally authorized representative of CST, the following terms apply to Products provided by CST, its affiliates or its distributors. Any Customer's terms and conditions that are in addition to, or different from, those contained herein, unless separately accepted in writing by a legally authorized representative of CST, are rejected and are of no force or effect.

Products are labeled with For Research Use Only or a similar labeling statement and have not been approved, cleared, or licensed by the FDA or other regulatory foreign or domestic entity, for any purpose. Customer shall not use any Product for any diagnostic or therapeutic purpose, or otherwise in any manner that conflicts with its labeling statement. Products sold or licensed by CST are provided for Customer as the end-user and solely for research and development uses. Any use of Product for diagnostic, prophylactic or therapeutic purposes, or any purchase of Product for resale (alone or as a component) or other commercial purpose, requires a separate license from CST. Customer shall (a) not sell, license, loan, donate or otherwise transfer or make available any Product to any third party, whether alone or in combination with other materials, or use the Products to manufacture any commercial products, (b) not copy, modify, reverse engineer, decompile, disassemble or otherwise attempt to discover the underlying structure or technology of the Products, or use the Products for the purpose of developing any products or services that would compete with CST's products or services, (c) not alter or remove from the Products any trademarks, trade names, logos, patent or copyright notices or markings, (d) use the Products solely in accordance with CST's Product Terms of Sale and any applicable documentation, and (e) comply with any license, terms of service or similar agreement with respect to any third party products or services used by Customer in connection with the Products.

For Research Use Only. Not For Use In Diagnostic Procedures.
Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.
PhosphoPlus is a trademark of Cell Signaling Technology, Inc.
U.S. Patent No. 7,429,487, foreign equivalents, and child patents deriving therefrom.