Data from: Shedding light on cobalamin photodegradation in the ocean

Téléchargement	Télécharger l’ensemble des données : Data from: Shedding light on cobalamin photodegradation in the ocean (DOI_10_5061_DRYAD_D51C5B087__V20231128.ZIP, 976.7 Mio)
DOI	Trouver le DOI : https://doi.org/10.5061/dryad.d51c5b087
Auteur	Rechercher : Bannon, Catherine C.Identifiant ORCID : https://orcid.org/0000-0002-8581-1069; Rechercher : Mudge, Elizabeth M.¹Identifiant ORCID : https://orcid.org/0000-0003-2266-5639; Rechercher : Bertrand, Erin M.Identifiant ORCID : https://orcid.org/0000-0002-5950-6810
Affiliation	Conseil national de recherches Canada. Centre de recherche en métrologie
Bailleur de fonds	Rechercher : Natural Sciences and Engineering Research Council of Canada; Rechercher : Simons Foundation
Format	Texte, Ensemble de données
Sujet	biological sciences; cobalamin; marine metabolites; vitamin
Résumé	Cobalamin, vitamin B₁₂, is an important micronutrient that has been investigated for decades in the marine context because it is required for phytoplankton growth. The biologically active forms (Me-B₁₂, Ado-B₁₂) and the synthetic form (CN-B₁₂) quickly convert to OH-B₁₂ after light exposure in various aqueous solutions, but puzzlingly have been frequently reported to dominate dissolved cobalamin pools in the sunlit ocean. Here, we document photodegradation timescales for these cobalamin forms in natural seawater using targeted mass spectrometry, providing quantitative evidence that OH-B₁₂ is expected to be the dominant dissolved form in irradiated seawater. Then, through high resolution mass spectrometry, we identify four photodegradation products of OH-B₁₂ which represent potential building blocks microbes could salvage and remodel to satisfy cellular cobalamin requirements. Taken together, these results clarify the impact of light on marine cobalamin dynamics, laying a foundation for a more quantitative understanding of the role of cobalamin in microbial communities and biogeochemical cycles.
Date de publication	2023-11-28
Maison d’édition	Dryad
Licence	Creative Commons, CC0 1.0 DEED CC0 1.0 universel https://creativecommons.org/publicdomain/zero/1.0/deed.fr
Publication connexe	Bannon, Catherine C., Elizabeth M. Mudge, et Erin M. Bertrand. « Shedding light on cobalamin photodegradation in the ocean ». Limnology and Oceanography Letters 9, nᵒ 2 (14 décembre 2023): 135‑44. https://doi.org/10.1002/lol2.10371.
Langue	anglais
Exporter la notice	Exporter en format RIS
Collection	Données de recherche du CNRC
Identificateur de l’enregistrement	e4ee5576-61a7-44d5-b5f5-16e4ac6bbf2d
Enregistrement créé	2024-01-19
Enregistrement modifié	2025-11-21

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Date de modification :: 2026-04-24