Carbon and hydrogen isotope fractionation in lipid biosynthesis by Sporosarcina sp. DSK25
نویسندگان
چکیده
منابع مشابه
Fractionation of hydrogen isotopes in lipid biosynthesis
Isotopic compositions of carbon-bound hydrogen in individual compounds from eight dierent organisms were measured using isotope-ratio-monitoring gas chromatography±mass spectrometry. This technique is capable of measuring D/H ratios at natural abundance in individual lipids yielding as little as 20 nmol of H2, and is applicable to a wide range of compounds including hydrocarbons, sterols, and ...
متن کاملCarbon and hydrogen isotope fractionation by moderately thermophilic methanogens
A series of laboratory studies were conducted to increase understanding of stable carbon (C/C) and hydrogen (D/H) isotope fractionation arising from methanogenesis by moderately thermophilic acetateand hydrogen-consuming methanogens. Studies of the aceticlastic reaction were conducted with two closely related strains of Methanosaeta thermophila. Results demonstrate a carbon isotope fractionatio...
متن کاملMechanism of carbon isotope fractionation associated with lipid synthesis.
The low carbon-13/carbon-12 ratio of lipids is shown to result from isotopic fractionation during the oxidation of pyruvate to acetyl coenzyme A. In vitro analysis of the kinetic isotope effects of this reaction indicates that there will be a large, temperature-dependent difference in the carbon-13/carbon-12 ratio between the methyl and carbonyl carbon atoms of acetyl coenzyme A and between tho...
متن کاملCarbon isotope fractionation by Emiliania huxleyi
The ratio of l*C : 13C was measured for Emiliania huxleyi cells grown under a range of irradiances in batch culture. Based on the assumption that HCO, was the carbon source, the maximum discrimination against 13C in the decalcified E. huxleyi cells was 24.6?& at 4.8 mol photons m-* d-l and the minimum discrimination was 17.9?& at 0.5 mol photons m-* d-l. In calcified cells, the range of 13C iso...
متن کاملStable Carbon Isotope Fractionation by Methanogens
Introduction: Methanogenic archaea, which consume CO2 and H2, have been considered models for possible life forms on Mars for a long time, even before the discovery of methane in the Martian atmosphere (1-8). Several intensive experimental studies have been conducted to investigate survivability of methanogens under conditions that approach those found on Mars (2, 3, 9). Various potential sourc...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Geochemical Perspectives Letters
سال: 2020
ISSN: 2410-3403
DOI: 10.7185/geochemlet.2016