Evolution (Introduction)

by xeno6696 , Sonoran Desert, Thursday, October 08, 2009, 18:25 (5524 days ago) @ David Turell

I've noted in the past that living protein molecules are enormous and specifically folded. This makes it very difficult to analyze them. Crystalography was used for DNA and now has uncovered the general shape of the proteins that make the ribosome, the organelle that makes protein in the cells following instructions from RNA messenger molecules. Three folks just got the Nobel for their work. Look at the snapshot of the ribosome:
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> http://www.nature.com/news/2009/091007/full/news.2009.981.html
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> The histones, molecules that shepherd DNA are also able to create epigenetic effects through their control of gene expression.This article about new findings explain some of their functions.
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> http://www.physorg.com/news174138276.html-I did enough biochem work to have a decent working knowledge of ribosomes. Several antibiotics (including nitrofurantoin) work by attacking these little translation centers. If you can't transcript, you can't survive...

--
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