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Four Distances between Pairs of Amino Acids Provide a Precise Description of their Interaction

Figure 2

Six projections of the four distances connecting Arg and Asp.

The four distances are: NH1–OD1 (d11), NH1–OD2 (d12), NH2–OD1 (d21), and NH2–OD2 (d22). Six projection are needed to plot the four dimensional data. Only cases with correct IUPAC atom name assignment protocol were considered.

Figure 2

doi: https://doi.org/10.1371/journal.pcbi.1000470.g002