Alpha helix: Difference between revisions
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New page: ==Structure and hydrogen bonding== <StructureSection load='1stp' size='340' side='right' caption='Caption for this structure' scene=''> Secondary structure, right-handed helix, 3.6 resid... |
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==Structure and hydrogen bonding== | ==Structure and hydrogen bonding== | ||
<StructureSection load=' | <StructureSection load='1hho' size='340' side='right' caption='Caption for this structure' scene=''> | ||
The following 4 scenes are inspired by a nice set of figures in Stryer's biochemistry textbook (https://www.ncbi.nlm.nih.gov/books/NBK22580/figure/A322/?report=objectonly). In an alpha helix, the main chain arranges in a <scene name='77/778341/Ribbon/1'>right-handed helix</scene> with the side chains (green) pointing away from the helical axis. The alpha helix is stabilized by <scene name='77/778341/Hbonds/1'>hydrogen bonds</scene> from amino acid n to n+4. There are <scene name='77/778341/Wheel/1'>3.6 residues per turn</scene>. In space filling depiction, you can see how <scene name='77/778341/Space/1'>tightly packed</scene> the main chain is (no space in the middle). | |||
Which amino acids are found in alpha helices? | Which amino acids are found in alpha helices? | ||
