caffeine + a ubiquinone + H2O <=> 1,3,7-trimethylurate + a ubiquinol
caffeine + a ubiquinone + h2o <=> 1,3,7-trimethylurate + a ubiquinol
caffeine + a ubiquinone + H2O <=> 1,3,7-trimethylurate + a ubiquinol
caffeine + a ubiquinone + h2o <=> 1,3,7-trimethylurate + a ubiquinol