Proteopedia:Featured EDU/1: Difference between revisions
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<tr><td>[[Image:Phi-psi-clashes-1.png|center|300px]]</td></tr> | <tr><td>[[Image:Phi-psi-clashes-1.png|center|300px]]</td></tr> | ||
<tr><td>'''Tutorial: The Ramachandran principle, phi (φ) and psi (ψ) angles in proteins'''< | <tr><td><div class="scrolling">'''Tutorial: The Ramachandran principle, phi (φ) and psi (ψ) angles in proteins'''<br> | ||
''by Eric Martz''<br> | |||
The Ramachandran Principle says that alpha helices, beta strands, and turns are the most likely conformations for a polypeptide chain to adopt, because most other conformations are impossible due to steric collisions between atoms. | The Ramachandran Principle says that alpha helices, beta strands, and turns are the most likely conformations for a polypeptide chain to adopt, because most other conformations are impossible due to steric collisions between atoms. | ||
Check Show Clashes to see where non-bonded atoms are overlapping, and thus in physically impossible positions. | Check Show Clashes to see where non-bonded atoms are overlapping, and thus in physically impossible positions. | ||