dl-threo-2-methylisocitrate is a substrate of isocitrate lyase 1 (ICL1). IC50 value: target: using michael-menten nonlinear least squares fitting to determine the purified recombinant ICL1's Km for threo-D(s)L(s)-isocitrate (ICA) is 188°M and kcat is 5.24 s- 1. The Km of DL-threo-2-methylisocitrate (MICA) is about 4 times that of 718, and the kcat is 1.25 s-1.