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An analysis of fossil enamel protein

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Abstract

The amino-acid analysis of insoluble enamel protein from a mastodon tooth resembles that of fresh enamel. The residual protein contains a small but significant amount of hydroxy-proline and its overall composition is unlike dential collagen. The data indicate that hydroxy-proline is present in the insoluble enamel protein rather than as contamination from dentin.

Résumé

L'analyse des acides aminés de la protéine insoluble de l'émail d'une dent de mastodonte donne des résultats semblable à l'analyse des acides aminés de l'émail frais. La protéine résiduelle contient de l'hydroxyproline en quantité faible mais significative. L'ensemble de sa composition est différente de celle du collagène dentinaire. Les résultats semblent indiquer que l'hydroxyproline présente, dans la protéine insolble de l'émail, n'est pas le résultat d'une contamination à partir de la dentine.

Zusammenfassung

Die Aminosäurenzusammensetzung des unlöslichen Schmelzproteins eines Mastodonzahnes ist derjenigen des frischen Schmelzes ähnlich. Das verbleibende Protein enthält eine kleine aber signifikante Menge von Hydroxyprolin und seine gesamte Zusammensetzung ist verschieden von derjenigen des Zahnkollagens. — Diese Angaben zeigen, daß Hydroxyprolin eher im unlöslichen Schmelzprotein vorkommt, denn als Kontamination vom Dentin.

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References

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Additional information

This work has been carried out under National Institutes of Health Grant No. 5 R01 DE01919 and Training Grant No. 2 T01 DE00126 and National Science Foundation Grant No. GB-6888.

Research Career Development Awardee No. 5-K3-DE-32,542 from the National Institute of Dental Research.

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Doberenz, A.R., Miller, M.F. & Wyckoff, R.W.G. An analysis of fossil enamel protein. Calc. Tis Res. 3, 93–95 (1969). https://doi.org/10.1007/BF02058649

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  • DOI: https://doi.org/10.1007/BF02058649

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