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. Author manuscript; available in PMC: 2019 Sep 23.
Published in final edited form as: J Chem Inf Model. 2019 Jan 3;59(1):53–65. doi: 10.1021/acs.jcim.8b00537

Table 1.

Summary on the Total Entries of Drugs, Targets, and Drug–Target Pairs for All and Four Major Drug Target Classes

all AD ID ED
all no. drugs 6248 1596 486 4437
no. targets 4046 1858 774 2632
no. D-T pairs 19057 10387 2492 7679
GPCR no. drugs 559 474 135 35
no. targets 117 111 83 25
no. D-T pairs 1920 1759 426 53
ion channel no. drugs 407 277 55 103
no. targets 206 162 84 66
no. D-T pairs 2075 1794 234 165
protease no. drugs 1091 125 36 947
no. targets 246 93 60 193
no. D-T pairs 1388 237 78 1125
kinase no. drugs 758 99 43 644
no. targets 267 124 58 202
no. D-T pairs 1143 275 101 846