Step-by-step explanation:
The Ramachandran plot is a way to visualize the allowed regions of protein backbone torsion angles, phi and psi. These angles determine the conformation of the peptide bond and are important for protein structure and function.
Typically, the allowed regions of the Ramachandran plot are divided into three regions: the most favored regions, the additionally allowed regions, and the generously allowed regions.
The percentage of amino acids found in the most favored and additionally allowed regions of the Ramachandran plot depends on the protein structure being analyzed. However, for a well-refined protein structure, the percentage of amino acids in the most favored regions can be around 98%, and the percentage of amino acids in the most favored and additionally allowed regions can be around 99.7%.