http://blogs.discovermagazine.com/80beats/2009/09/29/for-proteins-evolution-is-a-one-way-street/ 80beats is DISCOVER's news aggregator, weaving together the choicest tidbits from the best articles covering the day\'s most compelling topics. Tue, 24 Nov 2009 18:46:20 -0600 http://wordpress.org/?v=2.8.4 hourly 1 http://blogs.discovermagazine.com/80beats/2009/09/29/for-proteins-evolution-is-a-one-way-street/comment-page-1/#comment-53259 Fat kid Wed, 30 Sep 2009 17:18:29 +0000 http://blogs.discovermagazine.com/80beats/?p=3674#comment-53259 Think of adaptation as a ripple instead of a line. Ennervation broadcasts outward in all directions, not just up or down. Think of adaptation as a ripple instead of a line. Ennervation broadcasts outward in all directions, not just up or down.

]]> http://blogs.discovermagazine.com/80beats/2009/09/29/for-proteins-evolution-is-a-one-way-street/comment-page-1/#comment-53205 YouRang Wed, 30 Sep 2009 14:38:34 +0000 http://blogs.discovermagazine.com/80beats/?p=3674#comment-53205 Hmm. They don't seem to have tried going just part way back to see if there is any difference in those 5 non-functioning sites. I.e. maybe there is no evolutionary drive to change those 5 at the present configuration ; but what would happen if they had changed just 1 and then returned some of the 5, then just 2 then just 3 ... of the 7 crucial changes? Maybe there would have been evolutionary advantages for the 5 to go back tat those points. And, the question remains: At how many returned functional amino acids would you get a dead protein? And hence, (call that number N) if you had just changed N-1 proteins, would there have been an evolutionary advantage? Hmm. They don’t seem to have tried going just part way back to see if there is any difference in those 5 non-functioning sites. I.e. maybe there is no evolutionary drive to change those 5 at the present configuration ; but what would happen if they had changed just 1 and then returned some of the 5, then just 2 then just 3 … of the 7 crucial changes? Maybe there would have been evolutionary advantages for the 5 to go back tat those points. And, the question remains: At how many returned functional amino acids would you get a dead protein? And hence, (call that number N) if you had just changed N-1 proteins, would there have been an evolutionary advantage?

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