I really want to understand why there are just two ramachandran angles to understand the structure of the protein and why not three or many ? Can someone suggest some reference and explain this ?
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https://chemistry.stackexchange.com/questions/40181/when-calculating-a-dihedral-angle-for-a-chemical-bond-how-is-the-direction-defi https://chemistry.stackexchange.com/questions/28167/how-to-get-a-proteins-dihedral-angles-ordered-by-variance https://chemistry.stackexchange.com/questions/485/what-is-c%ce%b2-c-beta-deviation – Mithoron Nov 17 '17 at 15:26
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Is anything unclear for example, here: https://en.wikipedia.org/wiki/Ramachandran_plot This is rather trivial question. – Mithoron Nov 17 '17 at 15:38
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Only two angles are needed because the -CONH- grouping is assumed to be planar, which generally holds true, so is a good assumption. – porphyrin Nov 21 '17 at 11:35