Houston, K.M., Babayan, S. , Allen, J.E. and Harnett, W. (2008) Does litomosoides sigmodontis synthesize dimethylethanolamine from choline? Parasitology, 135(1), pp. 55-61. (doi: 10.1017/S0031182007003642) (PMID:17892618)
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Abstract
Juvenile female Litomosoides sigmodontis secrete a protein (Juv-p120) highly modified with dimethylethanolamine (DMAE). In an attempt to establish the source of this decoration worms were pulsed with [3H]-choline and [3H]-ethanolamine and the radio-isotope labelled products analysed. Both isotope labels were successfully taken up by the worms, as demonstrated by labelling of phospholipids with [3H]-choline, being predominantly incorporated into phosphatidylcholine and [3H]-ethanolamine into phosphatidylethanolamine. Isotope labelling of phosphatidylethanolamine was particularly striking with the worms taking up ~30 times as much labelled ethanolamine as choline. It was possible to detect faint labelling of Juv-p120 with [3H]-ethanolamine after prolonged exposure periods but, unlike the situation with the phospholipids, it was much more readily labelled with [3H]-choline. When pulsing with [3H]-ethanolamine it was also possible to detect isotope-labelled phosphatidylcholine, which may ultimately account for the low levels of labelling of Juv-p120. Overall our results raise the previously unconsidered but intriguing possibility that in L. sigmodontis, choline may be the precursor of DMAE.
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Harnett, Professor William and Babayan, Dr Simon |
Authors: | Houston, K.M., Babayan, S., Allen, J.E., and Harnett, W. |
College/School: | College of Medical Veterinary and Life Sciences > School of Infection & Immunity College of Medical Veterinary and Life Sciences > School of Biodiversity, One Health & Veterinary Medicine |
Journal Name: | Parasitology |
Publisher: | Cambridge University Press |
ISSN: | 0031-1820 |
ISSN (Online): | 1469-8161 |
Published Online: | 25 September 2007 |
Copyright Holders: | Copyright © 2008 Cambridge University Press |
First Published: | First published in Parasitology 135(1):55-61 |
Publisher Policy: | Reproduced in accordance with the copyright policy of the publisher |
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