How to Calculate Rotational Angle of Alpha Helix?
Rotational Angle of Alpha Helix calculator uses Rotation_angle_per_residue = acos((1-(4*cos(((Dihedral angles around negative 65°+Dihedral angles around negative 45°)/2)^2)))/3) to calculate the Rotation angle per residue, The Rotational Angle of Alpha Helix formula is defined as the general formula for the rotation angle Ω per residue of any polypeptide helix with trans isomers is given by the equation. Rotation angle per residue is denoted by Ω symbol.
How to calculate Rotational Angle of Alpha Helix using this online calculator? To use this online calculator for Rotational Angle of Alpha Helix, enter Dihedral angles around negative 65° (φ) & Dihedral angles around negative 45° (ψ) and hit the calculate button. Here is how the Rotational Angle of Alpha Helix calculation can be explained with given input values -> 177.9846 = acos((1-(4*cos(((0.1745329251994+0.1745329251994)/2)^2)))/3).