highly significantP value = 4.2 × 10 −105
S2 ): While only 24,303 (5.7%) of the total 427,350 pairs of enzyme-catalyzed reactions are coregulated, 175 (42.9%) of the 408 fully coupled pairs are coregulated, which is highly significant (hypergeometric test, P value = 4.2 × 10 −105 ).