User:Tilman Schirmer/Sandbox 110
From Proteopedia
< User:Tilman Schirmer(Difference between revisions)
| Line 9: | Line 9: | ||
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| - | phi-psi = (180<sup>o</sup>, 180<sup>o</sup>), fully extended chain: | + | '''phi-psi = (180<sup>o</sup>, 180<sup>o</sup>)''', fully extended chain: |
<scene name='User:Tilman_Schirmer/Sandbox_100/Extended/2'>model</scene>, | <scene name='User:Tilman_Schirmer/Sandbox_100/Extended/2'>model</scene>, | ||
<scene name='User:Tilman_Schirmer/Sandbox_100/Extended/3'> Calpha-trace</scene>.<br> Note the unfavorably <scene name='User:Tilman_Schirmer/Sandbox_110/Extended/2'>close distance</scene> between the carbonyl oxygen and the Cβ-atom of the next residue. | <scene name='User:Tilman_Schirmer/Sandbox_100/Extended/3'> Calpha-trace</scene>.<br> Note the unfavorably <scene name='User:Tilman_Schirmer/Sandbox_110/Extended/2'>close distance</scene> between the carbonyl oxygen and the Cβ-atom of the next residue. | ||
---- | ---- | ||
| - | phi-psi = (-110<sup>o</sup>, 130<sup>o</sup>), extended chain: | + | '''phi-psi = (-110<sup>o</sup>, 130<sup>o</sup>)''', extended chain: |
<scene name='User:Tilman_Schirmer/Sandbox_110/Beta_m110_130/1'>cartoon</scene>, | <scene name='User:Tilman_Schirmer/Sandbox_110/Beta_m110_130/1'>cartoon</scene>, | ||
<scene name='User:Tilman_Schirmer/Sandbox_110/Beta_m110_130/2'>main-chain</scene>, | <scene name='User:Tilman_Schirmer/Sandbox_110/Beta_m110_130/2'>main-chain</scene>, | ||
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| - | phi-psi = (70<sup>o</sup>, 180<sup>o</sup>): | + | '''phi-psi = (70<sup>o</sup>, 180<sup>o</sup>)''': |
<scene name='User:Tilman_Schirmer/Sandbox_100/Elongated_helix/1'>model</scene>, | <scene name='User:Tilman_Schirmer/Sandbox_100/Elongated_helix/1'>model</scene>, | ||
<scene name='User:Tilman_Schirmer/Sandbox_100/Elongated_helix/2'>Calpha-trace</scene>; note that there are clashes (where?)<br> | <scene name='User:Tilman_Schirmer/Sandbox_100/Elongated_helix/2'>Calpha-trace</scene>; note that there are clashes (where?)<br> | ||
| Line 39: | Line 39: | ||
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| - | phi-psi = (-60<sup>o</sup>, -40<sup>o</sup>), '''α-helix''': | + | '''phi-psi = (-60<sup>o</sup>, -40<sup>o</sup>)''', '''α-helix''': |
<scene name='User:Tilman_Schirmer/Sandbox_100/Helix/1'>model</scene>, | <scene name='User:Tilman_Schirmer/Sandbox_100/Helix/1'>model</scene>, | ||
<scene name='User:Tilman_Schirmer/Sandbox_100/Helix/2'>Calpha-trace</scene><br> | <scene name='User:Tilman_Schirmer/Sandbox_100/Helix/2'>Calpha-trace</scene><br> | ||
| Line 45: | Line 45: | ||
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| - | phi-psi = (-50<sup>o</sup>, -26<sup>o</sup>), '''3<sub>10</sub> helix''': | + | '''phi-psi = (-50<sup>o</sup>, -26<sup>o</sup>)''', '''3<sub>10</sub> helix''': |
<scene name='User:Tilman_Schirmer/Sandbox_100/310helix/1'>model</scene>, | <scene name='User:Tilman_Schirmer/Sandbox_100/310helix/1'>model</scene>, | ||
<scene name='User:Tilman_Schirmer/Sandbox_100/310helix/2'>Calpha-trace</scene> | <scene name='User:Tilman_Schirmer/Sandbox_100/310helix/2'>Calpha-trace</scene> | ||
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Current revision
Repetitive torsion angles
|
A polypeptide chain with a repetition of identical phi-psi torsion angles yields a helical structure.
phi-psi = (180o, 180o), fully extended chain:
,
.
Note the unfavorably between the carbonyl oxygen and the Cβ-atom of the next residue.
phi-psi = (-110o, 130o), extended chain:
,
,
; this is the β-strand conformation found in beta-sheets
Note:
Also strands with a are allowed, but they occur less frequent. This strand has phi-psi values of (-140o, 130o). See also Ramachandran Plots, http://en.wikipedia.org/wiki/Ramachandran_plot.
phi-psi = (70o, 180o):
,
; note that there are clashes (where?)
phi-psi = (-60o, -40o), α-helix:
,
phi-psi = (-50o, -26o), 310 helix: ,
