About the Authors
Department of Systems Biology, University of Texas M.D. Anderson Cancer Center, Houston, Texas, United States of America
Department of Cell Biology, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: KK PTR. Performed the experiments: KK. Analyzed the data: KK. Contributed reagents/materials/analysis tools: MAW. Wrote the paper: KK PTR.