Unnatural selection | Science News



Science News is a nonprofit.

Help us keep you informed.


Unnatural selection

Chemists build proteins with parts not in the typical toolkit

2:45pm, September 24, 2010

Amino acids are the Legos of life — tiny bricks that snap together, forming the proteins on which every function of life depends. With rare exceptions, cells choose from just 20 kinds of Legos. But this is enough for human cells to assemble the more than 1 million proteins they need to function.

This article is only available to Science News subscribers. Already a subscriber? Log in now. Or subscribe today for full access.

Get Science News headlines by e-mail.

More from Science News

From the Nature Index Paid Content