抄録
An active fraction catalyzing synthesis of dipicolinic acid from the diketopimelate-NH3 complex was extracted from sporangium. Some physical and chemical properties of the fraction were investigated. The activity of this fraction was stable to heat treatment at 100°C for 2 hours and also to the proteinase digestion. The active fraction was dialysable against the cellophane and collodion membrane. When the effects of various reducing agents on the activity of the fraction were compared, it was found that the addition of β-mercaptoethanol to the reaction system showed a significant increase of dipicolinic acid formation. PCMB and monoiodeacetate partially inhibited the reaction. KCN completely inactivated the fraction. Neither acid hydrolysate nor ash of the fraction showed any activity.
