HOME >> BIOLOGY >> NEWS
Protein fragments sequenced in 68 million-year-old Tyrannosaurus rex

BOSTON -- In a venture once thought to lie outside the reach of science, researchers from Harvard Medical School and Beth Israel Deaconess Medical Center have captured and sequenced tiny pieces of collagen protein from a 68 million-year-old Tyrannosaurus rex. The protein fragmentsseven in allappear to most closely match amino acid sequences found in collagen of present day chickens, lending support to a recent and still controversial proposal that birds and dinosaurs are evolutionarily related. The HMS and BIDMC researchers, working with scientists at North Carolina State University, report their findings in the April 13 Science.

"Most people believe that birds evolved from dinosaurs, but thats all based on the architecture of the bones," said John Asara, director of the mass spectrometry core facility at Beth Israel Deaconess Medical School and HMS instructor in pathology, who sequenced the protein fragments over the course of a year and a half using highly sensitive mass spectrometry methods. "This allows you to get the chance to say, Wait, they really are related because their sequences are related. We didnt get enough sequences to definitively say that, but what sequences we got support that idea."

In another study appearing in the same issue of Science, Mary Schweitzer, of North Carolina State University, and colleagues found that extracts of T. rex bone reacted with antibodies to chicken collagen, further suggesting the presence of birdlike protein in the dinosaur bones.

The mere existence of such exceedingly ancient protein defies a longstanding assumption. When an animal dies, protein immediately begins to degrade and, in the case of fossils, is slowly replaced by mineral. This substitution process was thought to be complete by one million years.

"For centuries it was believed that the process of fossilization destroyed any original material, consequently no one looked carefully at really old bones," said Schweitzer
'"/>

Contact: John Lacey
public_affairs@hms.harvard.edu
617-432-0442
Harvard Medical School
12-Apr-2007


Page: 1 2 3 4

Related biology news :

1. Protein chatter linked to cancer activation
2. Coming soon -- Protein synthesis without amino acids?
3. Protein pulling -- Learning how proteins fold by pulling them apart
4. Protein interactions targets for Huntington disease therapy
5. Protein enables discovery of quantum effect in photosynthesis
6. Protein found that slows hepatitis C growth in liver cells
7. Protein averts cell suicide but might contribute to cancer
8. Protein structures for the entire yeast proteome
9. Protein overexpression at heart of heart failure
10. Protein sciences
11. Protein identified that regulates effectiveness of Taxol chemotherapy in breast cancer

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:5/2/2019)... LA JOLLA, Calif. (PRWEB) , ... May 01, ... ... of genomic tests that give families insight into their future children, announces a ... Cell-Free DNA ” in the journal of Pregnancy and Child Health. Previous studies ...
(Date:4/25/2019)... Texas (PRWEB) , ... April 23, 2019 , ... ... role to many of the world’s Animal Genetics and Animal Health companies. Based ... growth is projected for the coming years. To better support these industries, Lifecycle ...
(Date:4/25/2019)... ... April 25, 2019 , ... Aniara Diagnostica, a multi-national ... its commitment to meeting today’s highest standards for product quality and cost-efficient delivery. ... its targeted proteases is needed. Current uses concern protein isolation, removal of reactive ...
Breaking Biology News(10 mins):
(Date:5/2/2019)... ... April 30, 2019 , ... ... REPROCELL USA Inc. has demonstrated its ability to provide various services and ... to enhance customer satisfaction through the effective implementation of its quality management ...
(Date:5/2/2019)... , ... May 02, 2019 , ... Stay on top ... medical device and food industries. Access to all webinars is free, so be sure ... in your field! , Visit http://www.xtalks.com to see our upcoming webinars: , ...
(Date:5/2/2019)... (PRWEB) , ... May 02, 2019 , ... ... transplantation clinic in the greater Boston area. Gone are the days of painful ... ARTAS® iX Robotic Hair Restoration System is the only robotic intelligent solution to ...
(Date:4/25/2019)... ... April 24, 2019 , ... Inference Solutions , ... organizations, today announced global availability of Inference Studio’s latest version, which makes it ... to harness the power of Google’s Contact Center AI (CCAI). , ...
Breaking Biology Technology:
Cached News: