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Gharibi H, Chernobrovkin AL, Eriksson G, Saei AA, Timmons Z, Kitchener AC, Kalthoff DC, Lidén K, Makarov AA, Zubarev RA. Abnormal (Hydroxy)proline Deuterium Content Redefines Hydrogen Chemical Mass. J Am Chem Soc 2022; 144:2484-2487. [PMID: 35107291 PMCID: PMC8855419 DOI: 10.1021/jacs.1c12512] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
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Analyzing the δ2H values in individual amino acids
of proteins extracted from vertebrates, we unexpectedly found in some
samples, notably bone collagen from seals, more than twice as much
deuterium in proline and hydroxyproline residues than in seawater.
This corresponds to at least 4 times higher δ2H than
in any previously reported biogenic sample. We ruled out diet as a
plausible mechanism for such anomalous enrichment. This finding puts
into question the old adage that “you are what you eat”.
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Affiliation(s)
- Hassan Gharibi
- Division of Physiological Chemistry I, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 77 Stockholm, Sweden
| | - Alexey L Chernobrovkin
- Division of Physiological Chemistry I, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 77 Stockholm, Sweden.,Pelago Bioscience, SE-171 48 Solna, Sweden
| | - Gunilla Eriksson
- Department of Archaeology and Classical Studies, Stockholm University, SE-114 19 Stockholm, Sweden
| | - Amir Ata Saei
- Division of Physiological Chemistry I, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 77 Stockholm, Sweden.,Department of Cell Biology, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - Zena Timmons
- Department of Natural Sciences, National Museums Scotland, Chambers Street, Edinburgh EH1 1JF, U.K
| | - Andrew C Kitchener
- Department of Natural Sciences, National Museums Scotland, Chambers Street, Edinburgh EH1 1JF, U.K
| | - Daniela C Kalthoff
- Department of Zoology, Swedish Museum of Natural History, SE-104 05 Stockholm, Sweden
| | - Kerstin Lidén
- Department of Archaeology and Classical Studies, Stockholm University, SE-114 19 Stockholm, Sweden
| | | | - Roman A Zubarev
- Division of Physiological Chemistry I, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-171 77 Stockholm, Sweden.,Department of Pharmacological & Technological Chemistry, I. M. Sechenov First Moscow State Medical University, Moscow 119991, Russia.,The National Medical Research Center for Endocrinology, Moscow 115478, Russia
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