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Table 1 Number of enzyme entries in each EC class, and numbers of channels of different lengths

From: Anatomy of enzyme channels

EC Enzyme class Number of enzymes Enzymes with channels of length
≥ 5 Å ≥10 Å ≥ 15 Å ≥ 20 Å
EC1 Oxidoreductases 879 781 736 684 612
EC2 Transferases 1096 963 863 747 639
EC3 Hydrolases 1455 1228 1019 749 542
EC4 Lyases 465 401 361 318 262
EC5 Isomerases 252 226 204 165 140
EC6 Ligases 159 139 118 98 88
  Sum 4306 3738 3301 2761 2283
  1. Numbers of enzymes in the dataset containing at least one channel of the given length. Bold values indicate 15 Å threshold for channel detection used thorough the study.