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Table 3 Nucleotide compositions of acceptor (AC) arm, D-arm, D-loop, anticodon (ANC) arm, anticodon loop, variable region, Ψ-arm, and Ψ-loop in chloroplast tRNAs

From: Evolution and structural variations in chloroplast tRNAs in gymnosperms

Region of tRNA

Nucleotide composition

AC arm

Number of nucleotides

0

1

2

3

4

5

6

7

8

    

Number of tRNAs

3 (0.17%)

3 (0.17%)

1 (0.06%)

21 (1.18%)

18 (1.01%)

12 (0.67%)

58 (3.26%)

1659 (93.25%)

4 (0.22%)

D-arm

Number of nucleotides

1

3

4

          

Number of tRNAs

2 (0.11%)

609 (34.23%)

1168 (65.65%)

D-loop

Number of nucleotides

6

7

8

9

10

11

12

26

     

Number of tRNAs

1 (0.06%)

341 (19.17%)

281 (15.8%)

719 (40.42%)

162 (9.11%)

249 (14.00%)

25 (1.41%)

1 (0.06%)

ANC arm

Number of nucleotides

4

5

           

Number of tRNAs

135 (7.59%)

1664 (93.54%)

ANC loop

Number of nucleotides

7

9

10

12

         

Number of tRNAs

1743 (97.98%)

24 (1.35%)

2 (0.11%)

10 (0.56%)

Variable region

Number of nucleotides

1

2

3

4

5

6

7

8

11

15

16

17

20

Number of tRNAs

3 (0.17%)

7 (0.39%)

97 (5.45%)

283 (15.91%)

1049 (58.97%)

225 (12.65%)

63 (3.54%)

1 (0.06%)

37 (2.08%)

1 (0.06%)

13 (0.73%)

1 (0.06%)

1 (0.06%)

Ψ-arm

Number of nucleotides

4

5

6

          

Number of tRNAs

11 (0.62%)

1767 (99.33%)

1 (0.06%)

Ψ-loop

Number of nucleotides

7

            

Number of tRNAs

1779 (100%)