Abstract
A marine bacterium, isolated by an enrichment technique, is able to utilize choline as the sole carbon and nitrogen source in a medium containing various salts. The morphological and biochemical characteristics of the organism indicate that it is a new species. Substrate feeding coupled with culture filtrate analyses indicate that choline is metabolized as follows choline [forward arrow]betaine[forward arrow] dimethylglyclne + formaldehyde[forward arrow]sar cosine + formaldehyde [forward arrow] serine[forward arrow]pyruvate + ammonia without transmethylation being involved. This pathway has not previously been reported for other bacteria or for animal tissues.

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