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User:Tilman Schirmer/Sandbox 100
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(Difference between revisions)
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A polypeptide chain with a repetition of identical phi-psi torsion angles yields a helical structure. | A polypeptide chain with a repetition of identical phi-psi torsion angles yields a helical structure. | ||
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Examples: | Examples: | ||
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fully extended chain: phi-psi = (180<sup>o</sup>, 180<sup>o</sup>), | fully extended chain: phi-psi = (180<sup>o</sup>, 180<sup>o</sup>), | ||
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phi-psi = (-50<sup>o</sup>, -26<sup>o</sup>), model, Cα-trace; this is the conformation of a 3<sub>10</sub> helix<br> | phi-psi = (-50<sup>o</sup>, -26<sup>o</sup>), model, Cα-trace; this is the conformation of a 3<sub>10</sub> helix<br> | ||
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==== α-Helix ==== | ==== α-Helix ==== | ||
Revision as of 13:21, 15 March 2009
Secondary structure of proteins
Repetitive torsion angles
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