Cell Signaling Technology

Product Pathways - Screening Technologies

Phospho-ATM/ATR Substrate Motif [(pS/pT) QG] MultiMab™ Rabbit mAb mix #6966

KinomeView   Motif antibody  

No. Size Price
6966S 100 µl ( 10 western blots ) ¥3,900.00 现货查询 购买询价
6966 carrier free & custom formulation / quantityemail request
Applications Dilution Species-Reactivity Sensitivity MW (kDa) Isotype
W 1:1000 All Species Expected, Endogenous Rabbit IgG
IP 1:100

Species cross-reactivity is determined by western blot.

Applications Key: W=Western Blotting, IP=Immunoprecipitation,

Specificity / Sensitivity

Phospho-(Ser/Thr) ATM/ATR Substrate (S*/T*QG) (P-S/T2-100) Rabbit mAb recognizes proteins containing phospho-Ser or phospho-Thr followed by Gln and Gly residues. To some extent, this antibody also recongizes proteins with an S*/T*Q motif.

Phospho-(Ser/Thr) ATM/ATR Substrate (S*/T*QG) (P-S/T2-100) Rabbit mAb兔单抗识别包含谷氨酰胺和甘氨酸残基之前的磷酸化丝氨酸或磷酸化苏氨酸的蛋白质。某种程度上,此抗体可以识别S*/T*Q基序。

Source / Purification

Monoclonal antibody is produced by immunizing animals with a synthetic peptide containing the S*/T*QG motif. The antibody is formulated from two rabbit monoclones in order to cover a broad range of reactivity.


Western Blotting

Western Blotting

Western blot analysis of extracts from HeLa cells, untreated (-) or UV-treated (+, 50 mJ/cm2, 2 hr), using Phospho-(Ser/Thr) ATM/ATR Substrate (S*/T*QG) (P-S/T2-100) Rabbit mAb. Western blot was imaged using Odyssey® Infrared Imaging System (LI-COR® Biotechnologies).

对未处理(-)或UV(50 mJ/cm2,两小时,+)处理30分钟的HeLa细胞抽提液使用Phospho-(Ser/Thr) ATM/ATR Substrate (S*/T*QG) (P-S/T2-100) Rabbit mAb兔单抗进行Western blot分析。Western Blot图片采集使用Odyssey® Infrared Imaging System (LI-COR® Biotechnologies)。



Immunoprecipitation of Hela cells, untreated (-) or UV-treated (+, 50 mJ/cm2, 2 hr), using Phospho-(Ser/Thr) ATM/ATR Substrate (S*/T*QG) (P-S/T2-100) Rabbit mAb (lanes 3 and 4). Lanes 1 and 2 show 10% input. Western blot detection was performed using the same antibody (upper) and p95/NBS1 Antibody #3002 (lower).

对未处理(-)或UV(50 mJ/cm2,两小时,+)处理的HeLa细胞抽提液使用Phospho-(Ser/Thr) ATM/ATR Substrate (S*/T*QG) (P-S/T2-100) Rabbit mAb(列3、4)进行Western blot分析。列1和2显示10%输入对照。Western Blot检测使用相同抗体(上)和p95/NBS1 Antibody #3002(下)。


Ataxia telangiectasia mutated kinase (ATM) and ataxia telangiectasia and Rad3-related kinase (ATR) are related kinases that regulate cell cycle checkpoints and DNA repair (1). The identified substrates for ATM are p53, p95/NBS1, MDM2, Chk2, BRCA1, CtIP, 4E-BP1, and Chk1 (1,2) The essential requirement for the substrates of ATM/ATR is S*/T*Q. Hydrophobic amino acids at positions -3 and -1, and negatively charged amino acids at position +1 are positive determinants for substrate recognition by these kinases. Positively charged residues surrounding the S*/T*Q are negative determinants for substrate phosphorylation (3). The complex phenotype of AT cells suggests that it likely has additional substrates (3). To better understand the kinase and identify substrates for ATM and the related kinase ATR, CST has developed antibodies that recognize phosphorylated serine or threonine in the S*/T*Q motif.


  1. Kastan, M.B. and Lim, D.S. (2000) Nature Rev. Mol. Cell Biol. 1, 179-186.
  2. Zhao, H. and Piwnica-Worms, H. (2001) Mol. Cell. Biol. 21, 4129-4139.
  3. Kim, S. T. et al. (1999) J. Biol. Chem. 274, 37538-37543.

Application References

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Companion Products

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

Use of Cell Signaling Technology (CST) Motif Antibodies within certain methods (e.g., U.S. Patents No. 7,198,896 and 7,300,753) may require a license from CST. For information regarding academic licensing terms please have your technology transfer office contact CST Legal Department at CST_ip@cellsignal.com. For information regarding commercial licensing terms please contact CST Pharma Services Department at ptmscan@cellsignal.com.

LI-COR is a registered trademark of LI-COR, Inc.

Odyssey is a registered trademark of LI-COR, Inc.

Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.

MultiMab is a trademark of Cell Signaling Technology, Inc.

Cell Signaling Technology® is a trademark of Cell Signaling Technology, Inc.

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