User:Stephen Mills/Secondary Structure: Helices: Difference between revisions
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All the atoms are shown in this initial orientation (C = green; N = blue; O = red; S = yellow; H = white). The helix axis runs vertically, approximately parallel to the plane of the screen. | All the atoms are shown in this initial orientation (C = green; N = blue; O = red; S = yellow; H = white). The helix axis runs vertically, approximately parallel to the plane of the screen. | ||
<scene name='User:Stephen_Mills/Secondary_Structure:_Helices/A_helix_load/1'>Click here</scene> to show the helix in a space-filling representation. | |||
<scene name='User:Robert_Dutnall/Sandbox_1_alpha_helix/A_helix_mainchain/3'>Click here</scene> to show only the polypeptide mainchain (NH, Cα, and C=O). | <scene name='User:Robert_Dutnall/Sandbox_1_alpha_helix/A_helix_mainchain/3'>Click here</scene> to show only the polypeptide mainchain (NH, Cα, and C=O). | ||
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Click the "toggle spin" button in the box to stop the structure from rotating. Now use your mouse to rotate the structure to look down the helix axis. If you have any problems with finding this view, <scene name='User:Robert_Dutnall/Sandbox_1_alpha_helix/A_helix_mainchain_label_axis/3'>click here </scene>to zoom in and look down the helix axis from the N-terminal end. | Click the "toggle spin" button in the box to stop the structure from rotating. Now use your mouse to rotate the structure to look down the helix axis. If you have any problems with finding this view, <scene name='User:Robert_Dutnall/Sandbox_1_alpha_helix/A_helix_mainchain_label_axis/3'>click here </scene>to zoom in and look down the helix axis from the N-terminal end. | ||
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What is in the middle of the helix? | |||
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Now, | |||
<scene name='User:Stephen_Mills/Secondary_Structure:_Helices/A_helix_main_axis_spacefill/1'>click here</scene> to see the helix in a space-filling representation. | |||
Now, answer that question again - what is in the middle of the helix? | |||
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