Fermentation process for the preparation of d-pantothenic acid by amplifying the pand gene in microorganisms

摘要

Recombinant DNA (I), comprising a nucleotide sequence (Ia) encoding aspartate-1-decarboxylase, present in microorganisms, especially Corynebacterium and Escherichia, is new. Independent claims are also included for the following: (1) microorganisms (II), especially of the genus Corynebacterium or Escherichia, transformed with (I); (2) plasmid vector pND-D2 (III) deposited as Corynebacterium glutamicum ATCC 13032/pND-D2 under DSM 12438; (3) plasmid vector pND-DBC2 (IV) deposited as Corynebacterium glutamicum ATCC 13032/pND-DBC2 under DSM 12437; and (4) a method (V) for the preparation of D-pantothenic acid, comprising overexpressing (Ia) in (II) and performing fermentation.