Chemists Concoct Part of Life's Recipe


	Chemists Concoct Part of Life's Recipe

wildcat

11-18-2007 9:29 AM

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tags:

life, biology, chemistry, biomolecules, genetics

1 Comment |

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11-18-2007 10:04 AM

abailart

Molecular 'valves' that repel or attract via ionisation, pumping or not pumping water, on or off, a likely bet.

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/9f31fba8-2132-4caa-b465-3b26ae726b45/25C99552-8AEF-4D05-AD68-A06F3F5ACA2B/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://www.livescience.com/strangenews/071116-adenine-formation.html" href="http://www.livescience.com/strangenews/071116-adenine-formation.html" style="font-size: 11px;">www.livescience.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.livescience.com/strangenews/071116-adenine-formation.html"><P>
For decades, scientists have argued about and pondered over whether biology began on our planet or arrived from above. If it started here, it presumably took millions of years for Earth to cook up life's essential molecules from scratch. 
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Now a team of chemists has computed a possible real-world recipe for one of these biomolecules, in research that suggests life started in a local pond rather than raining down from <A href="http://www.space.com/">space</A>. 
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Living cells are like tiny chemical factories, assembling long molecular chains such as DNA and proteins. But prior to <A href="http://www.livescience.com/strangenews/070822_gm_life_origins.html">life's emergence on Earth</A>, these complex molecules must have come together by themselves, without the help of living cells. 
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"Just where these biomolecules originated isn’t known," said Paul von Rague Schleyer from the University of Georgia. "They could have formed from smaller molecules present on primitive Earth, either very slowly over millions of years or rapidly before the Earth cooled down." 
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