BIOCHEMISTRY Correction for “Quantitative phosphoproteomic analysis reveals system-wide signaling pathways downstream of SDF-1/CXCR4 in breast cancer stem cells,” by Tingfang Yi, Bo Zhai, Yonghao Yu, Yoshikawa Kiyotsugu, Thomas Raschle, Manuel Etzkorn, Hee-Chan Seo, Michal Nagiec, Rafael E. Luna, Ellis L. Reinherz, John Blenis, Steven P. Gygi, and Gerhard Wagner, which appeared in issue 21, May 27, 2014, of Proc Natl Acad Sci USA (111:E2182–E2190; first published April 29, 2014; 10.1073/pnas.1404943111).
The authors note that all instances of “δ-catenin” should instead appear as “p120-catenin.”