Table 3.
List of rRNA methyltransferases in animal mitochondria, yeast, and bacteria alongside their putative orthologs in Arabidopsis organelles
| Ribosomal subunit | Animal mitochondria | Yeast | Bacteria | References | Arabidopsis organelles+ |
|---|---|---|---|---|---|
| Small subunit | METTL15 (m4C839) | RsmH/MraW (m4Cm1402) | [100,112,113, 101] |
CMAL (m4C1352) (C) | |
| NSUN4 (m5C841) | ‒ | YebU (m5C1407) | [102,103,114] | At4g40000 (M*) | |
| TFBIM (m26A1583-1584) |
DIM1 (m26A1781-1782 |
KsgA/RsmA (m26A1518-1519) |
[35,104,105] | DIM1B (m26A1914-1915) (M) PFC1 (m26A) (C) |
|
| Trmt2B (m5U429) | ‒ | ‒ | [72] | At3g21300 (C*) | |
| ‒ | snR70 (Cm1639) | yraL (m4Cm1402) | [101,124] | At1g45110 (C*) | |
| ‒ | ‒ | RsmB (m5C967) | [125] | At1g06560 (C*/M*) At3g13180 (C*) At5g26180 (C*) |
|
| ‒ | ‒ | RsmD (m2G966) | [126] | At3g28460 (C*) | |
| ‒ | ‒ | RsmE (m3U1498) | [127] | At1g50000 (C*) | |
| ‒ | ‒ | RsmG (m7G527) | [128] | At5g50110 (C*/M*) | |
| Large subunit | MRM1 (Gm1145) | Pet56 (Gm2270) | RlmB (Gm2251) | [98,108–110] | At2g19870 (C*/M*) |
| MRM2 (Um1369) | MRM2 (Um2791 21S mt-rRNA) |
RlmE (Um2552) | [98,99,111] | At4g25730 (N*) At5g13830 (N*) |
|
| MRM3 (Gm1370) | ‒ | ‒ | [98,99] | At5g15390 (C*) At4g38020 (C*) |
|
| ‒ | ‒ | RlmA (m1G745) | [129] | At1g69520 (M*) At1g69523 (C*) At1g69526 (C*) At2g41040 (C*) |
|
| ‒ | ‒ | RlmC (m5U747) | [130] | At3g21300 (C*) | |
| ‒ | ‒ | RlmD (m5U1939) | [130] | At3g21300 (C*) | |
| ‒ | ‒ | RlmH (m3Ψ1915) | [131] | At5g10620 (C*) | |
| ‒ | ‒ | RlmN (m2A2503) | [132] | At1g60230 (C*) At2g39670 (C*) |
+The putative rRNA methyltransferases in Arabidopsis organelles are indicated with their subcellular localization. N, nucleus; C, chloroplast; M, mitochondria; *, predicted. En dash indicates the absence of specific modifications.