Proton Channels
From Proteopedia
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<applet load='3bkd2rlf.pdb' size='400' frame='true' align='right' scene='Proton_Channels/Cartoon/2' caption='Linear interpolation morph from [[3bkd]] to [[2rlf| 2rlf model 1]]' /> | <applet load='3bkd2rlf.pdb' size='400' frame='true' align='right' scene='Proton_Channels/Cartoon/2' caption='Linear interpolation morph from [[3bkd]] to [[2rlf| 2rlf model 1]]' /> | ||
| - | At right is a linear-interpolation morph between 3BKD and 2RLF, showing the proposed opening and closing of this channel. | + | At right is a [[Morphs|linear-interpolation morph]] between 3BKD and 2RLF, showing the proposed opening and closing of this channel. |
In addition to watching the animation as alpha-helical ribbons, it is useful to watch it <scene name='Proton_Channels/Spacefilled/1'>spacefilled</scene>. Be sure to rotate the molecule to watch the animation from different perspectives! | In addition to watching the animation as alpha-helical ribbons, it is useful to watch it <scene name='Proton_Channels/Spacefilled/1'>spacefilled</scene>. Be sure to rotate the molecule to watch the animation from different perspectives! | ||
<scene name='Proton_Channels/Gating/1'>His37 and Trp41</scene> are believed to be crucial for pH-dependent gating. | <scene name='Proton_Channels/Gating/1'>His37 and Trp41</scene> are believed to be crucial for pH-dependent gating. | ||
| + | (The collapse and re-expansion of their sidechains is due to the [[Morphs|linear interpolation method]].) | ||
Revision as of 02:34, 19 March 2008
The M2 protein of influenza A virus is a proton channel. Its function is essential for productive infection by the virus.
See Category:Proton_channel for a list of all proton channel structures.
In January, 2008, crystallographic and NMR structures were published side by side in Nature for the transmembrane domains of the M2 protein: 3bkd and 2rlf. The former appeared to be in an open conformation blocked by amantadine, while the latter appeared to be in a closed conformation stabilized by rimantadine.
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At right is a linear-interpolation morph between 3BKD and 2RLF, showing the proposed opening and closing of this channel.
In addition to watching the animation as alpha-helical ribbons, it is useful to watch it . Be sure to rotate the molecule to watch the animation from different perspectives!
are believed to be crucial for pH-dependent gating. (The collapse and re-expansion of their sidechains is due to the linear interpolation method.)
Proteopedia Page Contributors and Editors (what is this?)
Eric Martz, Eran Hodis, David Canner, Joel L. Sussman, Michal Harel, Alexander Berchansky, Jaime Prilusky
