Comment on "Protein sequences from mastodon and Tyrannosaurus rex revealed by mass spectrometry".
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- Record sourced from PubMed, PMID 18174420.
- Also identified by DOI 10.1126/science.1147046 and PMC identifier 2694913.
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Abstract
We used authentication tests developed for ancient DNA to evaluate claims by Asara et al. (Reports, 13 April 2007, p. 280) of collagen peptide sequences recovered from mastodon and Tyrannosaurus rex fossils. Although the mastodon samples pass these tests, absence of amino acid composition data, lack of evidence for peptide deamidation, and association of alpha1(I) collagen sequences with amphibians rather than birds suggest that T. rex does not.
Medical subject headings
- Bone and Bones
- Collagen
- Dinosaurs
- Elephants
- Fossils