User:Karl Oberholser/Ramachandran Plots: Difference between revisions
Jump to navigation
Jump to search
Ramachandran Plots
Torsional angles
Psi (ψ) torsional angles
No edit summary |
No edit summary |
||
| Line 4: | Line 4: | ||
Extensive description of torsional angles [http://en.wikipedia.org/wiki/Torsional_angle here]. Each peptide bond has two torsional angles - psi and phi - which determine the geometry about the peptide bond. | Extensive description of torsional angles [http://en.wikipedia.org/wiki/Torsional_angle here]. Each peptide bond has two torsional angles - psi and phi - which determine the geometry about the peptide bond. | ||
===Psi (ψ) torsional angles=== | ===Psi (ψ) torsional angles=== | ||
<applet load='180al-47.mol' size=' | <applet load='180al-47.mol' size='250' color='black' frame='true' align='right' caption='DiAlanine' /> | ||
Change the | Change the display to <scene name='User:Karl_Oberholser/Ramachandran_Plots/Diala_180_-47_bs/2'>Ball and Stick</scene> to show more clearly the [http://en.wikipedia.org/wiki/Backbone_chain backbone atoms]. When identifying the atoms making up a ψ start with a N go through the peptide bond and stop at the next N. <scene name='User:Karl_Oberholser/Ramachandran_Plots/Diala_180_-47_psi_halos/1'>Mark </scene>these atoms with halos. | ||
<scene name='User:Karl_Oberholser/Ramachandran_Plots/Diala_180_-47/1'>TextToBeDisplayed</scene> | <scene name='User:Karl_Oberholser/Ramachandran_Plots/Diala_180_-47/1'>TextToBeDisplayed</scene> | ||
and in identifying the atoms making up φ you start with a carbonyl C go through the same peptide bond and stop at the next carbonyl C. | |||
Revision as of 23:01, 10 June 2008
Ramachandran PlotsRamachandran Plots
A Ramachandran plot has the values of psi (ψ) torsional angles on the y-axis and the values of phi (φ)torsional angles on the x-axis. More detailed description here.
Torsional anglesTorsional angles
Extensive description of torsional angles here. Each peptide bond has two torsional angles - psi and phi - which determine the geometry about the peptide bond.
Psi (ψ) torsional anglesPsi (ψ) torsional angles
|
Change the display to to show more clearly the backbone atoms. When identifying the atoms making up a ψ start with a N go through the peptide bond and stop at the next N. these atoms with halos.
and in identifying the atoms making up φ you start with a carbonyl C go through the same peptide bond and stop at the next carbonyl C.