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Quote of the day

People say we're running out of energy. That's only true if we stick with these old 19th century technologies. We are awash in energy from sunlight.

 

Ray Kurzweil

 

Why Do Cells Age?

RATE THIS! +1
Posted in Science on 6th Feb, 2012 12:40 AM by APM

The scientists discovered that certain proteins, called extremely long-lived proteins (ELLPs), which are found on the surface of the nucleus of neurons, have a remarkably long lifespan.

 

While the lifespan of most proteins totals two days or less, the Salk Institute researchers identified ELLPs in the rat brain that were as old as the organism, a finding they reported February 3 in Science.

 

The Salk scientists are the first to discover an essential intracellular machine whose components include proteins of this age. Their results suggest the proteins last an entire lifetime, without being replaced.

 

ELLPs make up the transport channels on the surface of the nucleus; gates that control what materials enter and exit. Their long lifespan might be an advantage if not for the wear-and-tear that these proteins experience over time. Unlike other proteins in the body, ELLPs are not replaced when they incur aberrant chemical modifications and other damage.



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Comments

Author: Guest
Posted: 2013-10-26
+0
hVar1n wow, awesome blog.Really looking forward to read more. Really Great. Reply
Author: Guest
Posted: 2013-11-21
+0
Intfrmaoion is power and now I'm a !@#$ing dictator. Reply
Author: Guest
Posted: 2013-11-22
+0
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