| abstract |
Processes for the production, via recombinant DNA, of xanthan gum and variants of gum structurally related to xanthan, comprising in part the synthesis of these polysaccharides in anaerobic and / or denitrifying hosts. In particular, the plasmids pX209 and pRK290-H366 which contain the genes, isolated from X. campestris, encoding transferase I, transferases II, transferase III, transferase IV, transferase IV, transferase V, ketalase and ketilase are described. and polymerase. |