Figure 32
From: The Proteomic Code: a molecular recognition code for proteins
Propensity for PC-compatible amino acid pairs. There are 441 possible amino acid pairs altogether (21 × 21, including the stop place as the 21st variable). Amino acids that are (P) or are not (N) coded by a specific complementary rule (Proteomic Code, PC) were counted. PC1 and PC2 indicate complementarity of the respective codon pairs at all 3 or only the first and third codon bases in parallel (C) or anti-parallel (RC) readings.