Figure 6. Correlates of footprint abundance.
(A) Small footprint abundance, averaged for all codons encoding the same amino acid plotted against Kd of transfer of side chain from vapor to water as a measure of polarity (Wolfenden, 2007), with Spearman correlation from the average of three samples. (B) Relative occupancy of directly paired codons vs relative occupancy of codons that recognize the same tRNA with wobble pairing. Values are the average of three replicates. Dashed line shows y = x, the expected relationship if occupancy were determined solely by tRNA identity. (C and D) As in (B), showing small and large footprint abundance.