Table 1. Apparent steady-state binding constants of PKM2 for FBP, Phe and Ser.

Titrated ligand	Constant ligand	KDapparent
FBP	–	(21.4 ± 9.0) nM
	Ser (5 mM)	(12.5 ± 7.7) nM
	Phe (1.5 mM)	(8.1 ± 5.6) nM
Phe	–	(191.0 ± 86.3) µM
	FBP (50 μM)	(132.0 ± 11.7) µM
Ser	–	(507.5 ± 218.2) µM
	FBP (50 μM)	(462.0 ± 97.1) µM