About the Authors

Lei Xie

Affiliation San Diego Supercomputer Center, University of California San Diego, La Jolla, California, United States of America

Jian Wang

Affiliation Bioinformatics Program, University of California San Diego, La Jolla, California, United States of America

Philip E Bourne

To whom correspondence should be addressed. E-mail: bourne@sdsc.edu

Affiliations San Diego Supercomputer Center, University of California San Diego, La Jolla, California, United States of America , Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, California, United States of America

Competing Interests

This work is part of a provisional patent application filed by the University of California San Diego, UCSD Reference Number SD2008-001-1.

Author Contributions

LX and PEB conceived and designed the experiments. LX and JW performed the experiments and analyzed the data. LX contributed reagents/materials/analysis tools. All authors wrote the paper.