Cloning of the genes bioa, biod, biof of bacillus sphaericus, vectors and processed cells and method of preparation of the biotin

摘要

The present invention relates especially to a DNA sequence corresponding to one of the following genes of the biosynthetic pathway of biotin in bacteria: bioA gene, bioD gene and bioF gene. Vectors containing these sequences make it possible to transform other microorganisms in order to improve the production of biotin.