Department of Bioinformatics, College of Life Sciences, Zhejiang University, Hangzhou, P.R. China.|Department of Bioinformatics, College of Life Sciences, Zhejiang University, Hangzhou, P.R. China.|Department of Bioinformatics, College of Life Sciences, Zhejiang University, Hangzhou, P.R. China.|Department of Bioinformatics, College of Life Sciences, Zhejiang University, Hangzhou, P.R. China.|Department of Bioinformatics, College of Life Sciences, Zhejiang University, Hangzhou, P.R. China.