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Table 1 Codon usage of two-fold degenerate NNY codons in Cryptomonas sp. and Guillardia theta rbc L

From: Lineage-specific variations of congruent evolution among DNA sequences from three genomes, and relaxed selective constraints on rbcL in Cryptomonas (Cryptophyceae)

Clade

Asn

His

Asp

Tyr

Cys

Phe

Strain

AAC/AAU

CAC/CAU

GAC/GAU

UAC/UAU

UGC/UGU

UUC/UUU

Guillardia theta

15/0

8/2

12/8

12/3

0/7

12/5

C. curvata

   CCAC 0006

13/2

7/3

7/13

10/5

4/5

14/3

   CCAC 0080

13/2

4/6

10/10

11/4

3/6

11/6

C. marssonii

   CCAC 0086

16/0

6/4

14/6

12/3

1/7

11/6

   CCAC 0103

15/1

6/4

10/9

13/2

2/5

10/3

C. ovata

   CCAC 0064

8/8

8/2

7/13

5/10

0/8

10/7

   M1171

10/6

5/5

7/13

5/10

1/7

10/7

C. pyrenoidifera

   CCAP 979/61

15/0

8/2

12/8

13/3

0/7

12/5

   CCMP 152 and M1077

15/0

9/1

13/7

12/3

1/6

13/4

C. tetrapyrenoidosa

   M1092

13/3

8/2

13/6

10/5

3/5

12/5

   NIES 279

12/4

8/2

10/9

10/5

1/7

13/4

NoPyr

   CCAC 0031 and CCAP 979/46

15/0

10/0

14/6

13/2

4/3

16/1

   CCAC 0109

15/0

9/1

15/5

10/5

1/5

15/2

   M0741

15/0

6/4

13/7

9/6

3/3

15/2

clade LB (basally diverging taxa first)

C. gyropyrenoidosa

   CCAC 0108

12/4

5/5

9/10

11/4

1/5

12/6

C. lundii

   CCAC 0107

12/4

6/4

4/15

4/11

0/7

9/8

C. borealis

   CCAC 0113

6/9

2/8

2/18

3/12

0/8

5/12

   SCCAP K-0063

8/7

2/8

5/14

4/11

1/7

5/12

C. paramaecium

   CCAC 0056 and M2180

6/9

3/7

5/15

6/9

0/7

4/13

   CCAP 977/1

6/9

6/4

4/16

4/11

1/6

5/12

   M2452

5/10

3/7

7/12

7/8

1/6

6/11

  1. The entries for the rbc L genes in Table 1 refer to absolute counts per 396 amino acids (= 1188 nucleotide positions). Also for the Guillardia theta rbc L gene only the corresponding 396 of the 488 codons were used. The plastid of G. theta contains genes for 30 tRNAs [10]. Only the NNC codons (underlined) are served by an exactly matching tRNA. As a code table, the eubacterial/plastid code was used (code table 11). Bold face, changed codon usage from NNC to NNU = shift from selection bias to genome composition bias.