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Is there any built-in code in MATLAB that calculates phi-psi angles in pdb file as the bio.pdb module in biopython does?

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Masha
Masha 2023-1-29
评论： Masha 2023-1-31
Bio.pdb module in biopython helps in calculating the dihedral angles (phi-psi angles)
for poly_index, poly in enumerate(polypeptides) :
phi_psi = poly.get_phi_psi_list()
for res_index, residue in enumerate(poly) :
phi, psi = phi_psi[res_index]
Ref: https://warwick.ac.uk/fac/sci/moac/people/students/peter_cock/python/ramachandran/calculate/ramachandran_biopython.py.
Since I found MATLAB easier than biopython, I wanted to know if there's a way to calculate the dihedral angles in MATLAB itself.

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Arthur Goldsipe
Arthur Goldsipe 2023-1-30
Yes, take a look at the ramachandran function. It's primarily designed to show these angles in a Ramachadran plot, but it has options to turn off the plot and return these angles as an output.

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