Profiling of UV-induced ATM/ATR signaling pathways

被引：245

作者：

Stokes, Matthew P. ^{[1
]}

Rush, John ^{[1
]}

MacNeill, Joan ^{[1
]}

Ren, Jian Min ^{[1
]}

Sprott, Kam ^{[1
]}

Nardone, Julie ^{[1
]}

Yang, Vicky ^{[1
]}

Beausoleil, Sean A. ^{[2
]}

Gygi, Steven P. ^{[2
]}

Livingstone, Mark ^{[1
]}

Zhang, Hui ^{[1
]}

Polakiewicz, Roberto D. ^{[1
]}

Comb, Michael J. ^{[1
]}

机构：

[1] Cell Signaling Technol, Danvers, MA 01923 USA

[2] Harvard Med Sch, Dept Cell Biol, Boston, MA 02115 USA

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 2007年 / 104卷 / 50期

关键词：

DNA damage; mass spectrometry; phosphorylation;

D O I：

10.1073/pnas.0707579104

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

To ensure survival in the face of genomic insult, cells have evolved complex mechanisms to respond to DNA damage, termed the DNA damage checkpoint. The serine/threonine kinases ataxia telangiectasia-mutated (ATM) and ATM and Rad3-related (ATR) activate checkpoint signaling by phosphorylating substrate proteins at SQ/TQ motifs. Although some ATM/ATR substrates (Chk1, p53) have been identified, the lack of a more complete list of substrates limits current understanding of checkpoint pathways. Here, we use immunclaffinity phosphopepticle isolation coupled with mass spectrometry to identify 570 sites phosphorylated in UV-damaged cells, 498 of which are previously undescribed. Semiquantitative analysis yielded 24 known and 192 previously uncharacterized sites differentially phosphorylated upon UV damage, some of which were confirmed by SILAC, Western blotting, and immunoprecipitation/Western blotting. ATR-specific phosphorylation was investigated by using a Seckel syndrome (ATR mutant) cell line. Together, these results provide a rich resource for further deciphering ATM/ATR signaling and the pathways mediating the DNA damage response.

引用

页码：19855 / 19860

页数：6

共 25 条

[1] PI 3-kinase related kinases: 'big' players in stress-induced signaling pathways [J].