Production of vitamin B12 employing a fused cell hybrid.

摘要

A fused cell hybrid is obtained by fusing a cell of a chlorophyll-producing bacterial species belonging to the photosynthetic genus Rhodopseudomonas, such as Rhodopseudomonas spheroides, with a cell of a vitamin B12-producing bacterial species belonging to the methanol-metabolising genus Protaminobacter, such as Protaminobacter ruber. The fused cell hybrid is cultured to produce vitamin B12.