SEARCH Articles Figures Tables 4-Picoline Carboxylase Carboxylases NAD picolinate carboxylase Nicotinamide picolinate carboxylase Picolin Picolinate Carboxylase and Nonenzymic Cyclization to Quinolinic Acid Picolinates Picolines Picolinic acid carboxylase Picolinic carboxylase Picolinic carboxylase