Title: The fate of homoserine-14C in germinating peas
Abstract: Radioactive l-homoserine, fed through the roots, is slowly converted at 25°, to other metabolite by 7- and 14-day-old pea seedlings. The homoserine content was increasing in the younger seedlings and decreasing in the older seedlings, yet the pattern and rate of metabolism appeared very similar except for slightly greater amounts of label appearing in the protein fraction exclusively as threonine in the older seedlings. Over 24 hr, approximately 5% of the label from 1-14C-homoserine appears as CO2, O-Acetyl homoserine, and threonine are substantially labelled in the free amino acid fraction with significant label also appearing in the organic acid fraction. The cystathionine pathway to methionine is probably operative, as methionine, cystathionine and homocysteine of high specific activity were detected, although not consistently.
Publication Year: 1972
Publication Date: 1972-03-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 10
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