Fig. 3
From: Direct conversion of theophylline to 3-methylxanthine by metabolically engineered E. coli
Production of methylxanthines from TP by strain pDdA grown in SB. 1 mM TP (open circle) was converted to 0.81 ± 0.002 mM 3MX (shaded circle) and 0.13 ± 0.002 1MX (open square) within 90 min by 15 mg/mL of resting cells. Concentrations reported are means with standard deviations of triplicate results