ScienceDaily (July 31, 2009) — A new analysis of the remains of a Tyrannosaurus rex (T. rex) that roamed Earth 68 million years ago has confirmed traces of protein from blood and bone, tendons, or cartilage. The findings, scheduled for publication in the Sept. 4 issue of the Journal of Proteome Research, is the latest addition to an ongoing controversy over which biochemical remnants can be detected in the dinosaur.
A new analysis of the remains of a T. rex has confirmed traces of protein from blood and bone, tendons, or cartilage. (Credit: Wikimedia Commons)
In the study, Marshall Bern, Brett S. Phinney and David Goldberg point out that the first analysis in 2007 of a well-preserved, fossilized T. rex bone identified traces of seven distinct protein fragments, or peptides, from collagen. That material is one of the primary components of bone, tendons and other connective tissue. However, later studies disputed that finding, suggesting that it was a statistical fluke or the result of contamination from another laboratory sample.
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Reanalysis of Tyrannosaurus rex Mass Spectra
Marshall Bern*†, Brett S. Phinney‡ and David Goldberg†
Palo Alto Research Center, 3333 Coyote Hill Road, Palo Alto, California 94304, and Genome Center, University of California at Davis, Davis, California 95616
J. Proteome Res., Article ASAP
Publication Date (Web): July 15, 2009
Copyright © 2009 American Chemical Society
* To whom correspondence should be addressed. E-mail: bern@parc.com., † Palo Alto Research Center., ‡ University of California at Davis.
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