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  • 370-C0023A; Calculated, see abstract; Chikyu; Comment; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; End member; Exp370; Hole A; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; IODP Expedition 370; J-CORES sample ID; Nankai Trough; Sample code/label; Sample ID; Site C0023  (1)
  • Desulfobacterium cetonicum  (1)
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  • 1
    ISSN: 1432-072X
    Keywords: Key words Anaerobic degradation ; Aromatic ; compounds ; m-Cresol ; Toluene ; 3-Hydroxybenzylsuccinate ; Sulfate-reducing bacteria ; Desulfobacterium cetonicum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The anaerobic bacterium Desulfobacterium cetonicum oxidized m-cresol completely with sulfate as electron acceptor. During growth, 3-hydroxybenzylsuccinate (identified by gas chromatography/mass spectroscopy and by comparison of high-performance liquid chromatography retention time and UV spectrum with a chemically synthesized reference compound) accumulated in the medium. This finding indicates that the methyl group of m-cresol is activated by addition to fumarate as in the case of anaerobic toluene metabolism. In cell-free extracts of D. cetonicum, the formation of 3-hydroxybenzylsuccinate from m-cresol and fumarate was detected at an activity of 0.5 nmol min–1 (mg protein)–1. This reaction depended strictly on anoxic assay conditions. Treatment with air resulted in a complete loss of activity; however, some activity could be recovered after restoring anoxic conditions. The activity was slightly membrane-associated. 3-Hydroxybenzylsuccinate was degraded via CoA thioesterification and further oxidation to 3-hydroxybenzoyl-CoA as subsequent steps in the degradation pathway.
    Type of Medium: Electronic Resource
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  • 2
    Publication Date: 2023-06-14
    Description: The dataset includes rock magnetic end-member unmixing data of sediment cores from Site C0023 (Hole A) that was recovered during International Ocean Discovery Program (IODP) Expedition 370 in the Nankai Trough offshore Japan in the Pacific Ocean (Drilling vessel Chikyu). Site C0023 was established on 17 September 2016. Coring terminated on 3 November 2016. End-member modelling of isothermal remanent magnetization (IRM) acquisition curves were performed to characterize the iron mineralogy. IRM acquisition curves were measured using a Princeton Measurements Corporation Vibrating Sample Magnetometer (VSM). IRM was imparted stepwise (non-linearly) up to a maximum field of 1 T with an averaging time of 200 ms. Unmixing of IRM acquisition curves were performed using the web application MAX UnMix by Maxbauer et al. (2016). Mean coervity (Bh) is given in log10 B mT and dispersion parameter (DP) in log. EC is the extrapolated contribution to the total IRM.
    Keywords: 370-C0023A; Calculated, see abstract; Chikyu; Comment; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; End member; Exp370; Hole A; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; IODP Expedition 370; J-CORES sample ID; Nankai Trough; Sample code/label; Sample ID; Site C0023
    Type: Dataset
    Format: text/tab-separated-values, 651 data points
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