FIG. 3.
(A) HPLC analyses of metabolites produced from theophylline by a resting cell suspension of P. putida CBB5 grown in soytone-free M9-theophylline medium. The identities of metabolites are shown in Table 1. (B) Degradation of theophylline and various metabolites by a resting cell suspension of P. putida CBB5 grown in soytone-free M9-theophylline medium. Symbols: ⧫, theophylline; ○, 1-methylxanthine; ▵, 3-methylxanthine; ×, xanthine; *, 1,3-dimethyluric acid; ▴, 1-dimethyluric acid; □, 3-dimethyluric acid; ⋄, uric acid.