TABLE 3

MAT2A coexpression with MAT2B apparent K_m values

Values are mean ± S.E.M. for three independent determinations.

Construct	K_m Methionine	K_m ATP
	μM	μM
MAT2A	187 ± 32	158 ± 34
MAT2A/2B V1	30 ± 3^{^a}	72 ± 9^{^a}
MAT2A/2B V2	31 ± 4^{^a}	68 ± 8^{^a}

↵a p < 0.0001 compared with MAT2A.