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Carbon isotope composition of lipidic classes isolated from tobacco leave
Author(s) -
Deleens Eliane,
Schwebel-Dugue Nicole,
Tremolieres Antoine
Publication year - 1984
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/0014-5793(84)81239-9
Subject(s) - phosphatidylcholine , fractionation , isotopes of carbon , composition (language) , chemistry , molecule , isotope , carbon fibers , polar , biochemistry , phospholipid , stereochemistry , chromatography , organic chemistry , membrane , materials science , total organic carbon , physics , linguistics , philosophy , quantum mechanics , astronomy , composite number , composite material
It is shown that δ 13 C values of total fatty acids in each of the main lipidic classes of tobacco leaves reach a uniform value around −34.3‰. This finding is in agreement with the common origin for acyl chains demonstrated in plant cells. For all the lipidic classes investigated, the δ 13 C values in acyl chains were lower than in the whole lipidic molecules, except for the phosphatidylcholine in which the acyl chains and the polar head had similar values. Metabolic origins of the different part of lipidic molecules are discussed and related to the localization of the isotope fractionation step.