Origin, evolution, and mechanism of 5′ tRNA editing in chytridiomycete fungi

TABLE 1.

WC and non-WC base pairs in tRNA acceptor stems

Acceptor stem base pairs (%)
1–72 to 7–66 1–72 to 3–70
Organism # of tRNAs WC Non-WC G-U U-G mm WC Non-WC G-U U-G mm
Bold type indicates organisms with confirmed/predicted editing and highlights the percentage of WC base-pairing in their mitochondrial tRNA acceptor stems. (WC) Watson–Crick; (mm) mismatch. GenBank accession numbers for mitochondrial data: S. pombe, NC001326; A. macrogynus, NC001715; R. brooksianum, NC0030503; N. gruberi, NC002573; D. discoideum, AB000109; A. castellanii, U12386; S. punctatus, NC003052; Monoblepharella15, AY1820007; Harpochytrium94, AY182005; Harpochytrium105, AY1820006, H. curvatum, NC003048.
aData from the analysis of Marck and Grosjean (2002).
Eukaryaa 2025 89.5 10.5 9.3 1.1 92.8 7.2 6.9 0.2
Archaeaa 581 97.6 2.4 2.4 0.0 97.4 2.6 2.6 0.0
Eubacteriaa 1598 94.7 5.3 4.6 0.7 94.0 6.0 4.8 1.2
S. pombe 25 89.1 10.9 8.6 2.3 88.0 12.0 10.7 1.3
A. macrogynus 25 91.4 8.6 7.4 1.1 88.0 12.0 10.7 1.3
R. brooksianum 7 93.9 6.1 6.1 0.0 90.5 9.5 9.5 0.0
N. gruberi 21 88.4 11.6 3.4 8.2 76.2 23.8 4.8 19.0
D. discoideum 18 78.6 21.4 11.1 10.3 63.0 37.0 13.0 24.1
A. castellanii 15 76.2 23.8 3.8 20.0 48.9 51.1 4.4 46.7
S. punctatus 8 67.9 32.1 3.6 28.6 29.2 70.8 4.2 66.7
Monoblepharella15 9 74.6 25.4 9.5 15.9 40.7 59.3 22.2 37.0
Harpochytrium94 8 76.8 23.2 1.8 21.4 45.8 54.2 4.2 50.0
Harpochytrium105 8 71.4 28.6 1.8 26.8 33.3 66.7 4.2 62.5
H. curvatum 7 83.7 16.3 8.2 8.2 76.2 23.8 9.5 14.3

This Article

  1. RNA 10: 1191-1199