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Table 1 Data statistics of collected ubiquitination sites.

From: Characterization and identification of ubiquitin conjugation sites with E3 ligase recognition specificities

Resource (data set) Number of ubiquitinated proteins Number of ubiquitinated lysines Number of non-ubiquitinated lysines
dbPTM (Training set) 6259 23949 228441
mUbiSiDa (Independent testing set) 35494 110695 1217977