Summary
The renal handling and the metabolism of3H-labeled Nɛ-methylatedl-lysines1 were investigated in dogs. In one dog the endogenous clearance of some basic amino acids including methyllysines was measured. In the chicken kidney a possible tubular secretion of TML was checked using the Sperber technique. The following results were obtained:
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1.
l-MML is reabsorbed in the kidney similar to lysine.
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2.
l-DML has a smaller renal reabsorption than lysine.
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3.
The clearance ofl-TML is in the range of the inulin clearance. No evidence for tubular secretion ofl-TML has been obtained.
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4.
Forl-TML the lowest metabolism of all three methylated lysines has been found.
The different behaviour of methyllysines in the kidney is discussed with respect to their different physico-chemical properties.
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This investigation was supported by a grant of the Cusanuswerk for R. L., by the Deutsche Forschungsgemeinschaft and by the Universitätsbund Würzburg.
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Löwer, R., Lange, HW., Eichhorn, C. et al. Influence of additional methyl groups in the Nɛ-amino position of lysine on the renal handling. Pflugers Arch. 347, 159–172 (1974). https://doi.org/10.1007/BF00592397
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DOI: https://doi.org/10.1007/BF00592397