ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] The role of betaine and choline in the B12 fermentation is unclear. Although Valencia6 found methionine, betaine and choline (but not homocysteine) to stimulate B12 formation by Streptomyces olivaceus, Bray and Shemin7 reported that the six extra methyl groups of the B12 corrin moiety ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/2201324a0