GPS-SUMO: a tool for the prediction of sumoylation sites and SUMO-interaction motifs. - Qi Zhao; Yubin Xie; Yueyuan Zheng; Shuai Jiang; Wenzhong Liu; Weiping Mu; Zexian Liu; Yong Zhao 013; Yu Xue 001; Jian Ren 002 (Nucleic Acids Res., 2014)