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helix |
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helixIn mathematics, a three-dimensional curve resembling a spring, corkscrew, or screw thread. It is generated by a line that encircles a cylinder or cone at a constant angle. Helix
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When they used the program, the researchers were surprised to discover that their top candidates for containing beta helices were all bacterial proteins. What's more, the helices that fill space most efficiently in the team's computer simulations closely resemble those that form naturally in proteins, report Amos Maritan of the International School for Advanced Studies (SISSA) in Trieste, Italy, and his colleagues. Chains of these linked pyridine twins spontaneously braid into double helices around copper ions. |
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