technology-news

How life originated on Earth?

Washington, Sept. 14 : Researchers have now offered an intriguing new view about how life began on Earth.


University of North Carolina at Chapel Hill School of Medicine biochemist Charles Carter, PhD, and his team recreated ancient protein enzymes that likely played a vital role in helping create life on Earth.

The research team created and superimposed digital three-dimensional versions of the two super-families to see how their structures aligned.

Carter found that all the enzymes have virtually identical cores that can be extracted to produce 'molecular fossils' he calls Urzymes - Ur meaning earliest or original. The other parts, he said, are variations that were introduced later, as evolution unfolded.

These two Urzymes are as close as scientists have gotten to the actual ancient enzymes that would have populated the Earth billions of years ago.

Both Urzymes are very good at accelerating the two reactions necessary to translate the genetic code.

The finding also suggests that Urzymes evolved from even simpler ancestors - tiny proteins called peptides. And over time those peptides co-evolved with RNA to give rise to more complex life forms.

In this 'Peptide-RNA World' scenario, RNA would have contained the instructions for life while peptides would have accelerated key chemical reactions to carry out those instructions.

The study has been published in the Journal of Biological Chemistry.

--ANI (Posted on 14-09-2013)

technology-news headlines

LED bulbs can make your white shirt ineffective!

Revealed: What distracts your brain while driving

'Asteroid impact stored proof of life in glasses on earth'

Ancient tundra landscape discovered under Greenland Ice Sheet

NASA's Kepler Space Telescope finds Earth's twin

Concrete that never gets a crack!

Tiny robots to help you perform daily chores

Fossil of 325-million-year-old shark-like specie sheds light on evolution of jaws

Soon, wireless power zones to charge your phone

Soon, cheap computers and 'throwaway' cell phones

Scientists identify target for treating dengue

Waste sulphur to produce cheap infra-red devices

Quick Links: Goa | Munnar | Pondicherry | Free Yearly Horoscope '2014

Comments

Your e-mail:


Your Full Name:


Type verification image:
verification image, type it in the box

Message:

Back to Top