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Table 2 The pairs of amino acids that show the highest negative impact on the standard code fitness

From: Evolution of the genetic code: partial optimization of a random code for robustness to translation error in a rugged fitness landscape

PRS

Gilis score matrix

Average

Arg

Cys

-1.00

Arg

Gly

-1.00

Arg

Trp

-0.70

Arg

Trp

-0.82

Leu

Phe

-1.00

His

Tyr

-0.60

His

Leu

-0.66

Ala

Thr

-0.93

Arg

Gly

-0.54

Asn

Tyr

-0.52

Arg

Ser

-0.71

Leu

Phe

-0.50

His

Tyr

-0.49

Asn

Lys

-0.71

Arg

Cys

-0.50

Glu

Lys

-0.31

Asp

Glu

-0.71

Ala

Thr

-0.47

Lys

Thr

-0.18

Gln

His

-0.71

Arg

Ser

-0.43

Leu

Pro

-0.16

His

Tyr

-0.71

Glu

Lys

-0.41

Arg

Ser

-0.14

Ile

Met

-0.57

Asp

Glu

-0.36

Phe

Ser

-0.13

Arg

Trp

-0.57

Gln

His

-0.36

Gln

Lys

-0.12

Glu

Lys

-0.50

Asn

Lys

-0.36

Ala

Val

-0.11

Asn

Asp

-0.43

His

Leu

-0.33

Lys

Met

-0.11

Leu

Val

-0.43

Ile

Met

-0.29

Gly

Trp

-0.09

Ala

Ser

-0.36

Leu

Val

-0.23

Met

Thr

-0.09

Pro

Ser

-0.29

Asn

Tyr

-0.19

  1. Note: The negative elements were normalized such that the smallest one equals -1; the 15 most significant pairs are shown.