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Production of cobamides by Butyribacterium rettgeri
Author(s) -
Perlman D.,
Semar Joan B.
Publication year - 1963
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/bit.260050105
Subject(s) - chemistry , cofactor , fermentation , nucleotide , biochemistry , ammonium hydroxide , ammonium , ammonium carbonate , food science , nuclear chemistry , enzyme , organic chemistry , gene
Cobamide production by Butyribacterium rettgeri Barker and Haas (ATCC 10825) was studied on a laboratory scale. Yields of the order of 5 μg./ml. were obtained when this anaerobe was grown for 6 days at 37°C. in a medium containing glucose, cornsteep liquor, cobalt nitrate, calcium carbonate, and sufficient ammonium hydroxide to keep the pH between 6.0 and 7.2. All of the vitamin was found associated with the bacterial cells, and examination of extracts of these cells showed the presence of 5,6‐dimethylbenzimidazolylcobamide coenzyme in large quantities. Supplementation of the fermentation medium with a number of benzimidazoles resulted in formation of traces of “new” cobamides with these bases in the nucleotide protion of the cobamide. Supplementation with a number of purines did not result in incorporation of these moieties in the cobamide portion of the molecule.