EC Number |
Substrates |
Organism |
Products |
Reversibility |
---|
2.1.1.257 | more |
enzymatic post-transcriptional modifications of selected uridines in tRNA, secondary structure, U54 targets within the highly conserved 7-nt TPSI-loop, overview |
Haloferax volcanii |
? |
- |
? |
2.1.1.257 | more |
enzymatic post-transcriptional modifications of selected uridines in tRNA, secondary structure, U54 targets within the highly conserved 7-nt TPSI-loop, overview |
Halobacterium sp. |
? |
- |
? |
2.1.1.257 | more |
enzymatic post-transcriptional modifications of selected uridines in tRNA, secondary structure, U54 targets within the highly conserved 7-nt TPSI-loop, overview |
Methanocaldococcus jannaschii |
? |
- |
? |
2.1.1.257 | more |
Mja_1640 methylates T-arm resembling tRNAs in vitro. Using synthetic 17 mer RNAs resembling the T-arm of Methanocaldococcus jannaschii tRNATrp that contains a pseudouridine at either position 54, 55, or both, the capability of MjNep1 to methylate these substrates is shown, MjNep1 methylates the substrate with a pseudouridine at position 55 with reasonable efficiency, but markedly slower than its native small ribosomal subunit rRNA-derived substrate, and no methylation is observed for the substrate with pseudouridine at position 54, MjNep1 is incapable of modifying mature H. volcanii tRNAs. MjNep1 is apparently not the pseudouridine-N1 methyltransferase responsible for the tRNA-modification at position 54 in archaeal tRNAs |
Methanocaldococcus jannaschii |
? |
- |
? |
2.1.1.257 | more |
SAM-binding pocket Asp157 or Glu183 from its own monomer or Ser43 from the associate monomer probably plays the catalytic role for RNA methylation, RNA-binding residues and putative active site, overview |
Methanocaldococcus jannaschii |
? |
- |
? |
2.1.1.257 | more |
substrate specificity analysis by NMR binding and affinity study for RNA, overview. The enzyme is highly specific for pseudouridine. Methanocaldococcus jannaschii Nep1 binds to the yeast Nep1 RNA consensus sequence |
Methanocaldococcus jannaschii |
? |
- |
? |
2.1.1.257 | more |
substrate specificity analysis by NMR binding and affinity study for RNA, overview. The enzyme is highly specific for pseudouridine. Methanocaldococcus jannaschii Nep1 binds to the yeast Nep1 RNA consensus sequence |
Methanocaldococcus jannaschii DSM 2661 |
? |
- |
? |
2.1.1.257 | more |
enzymatic post-transcriptional modifications of selected uridines in tRNA, secondary structure, U54 targets within the highly conserved 7-nt TPSI-loop, overview |
Halobacterium sp. NRC-1 |
? |
- |
? |
2.1.1.257 | S-adenosyl-L-methionine + pseudouridine in 5'-GAUPsiCAACGCC-3' |
- |
Methanocaldococcus jannaschii |
S-adenosyl-L-homocysteine + N1-methylpseudouridine in 5'-GAUmethylPsiCAACGCC-3' |
- |
? |
2.1.1.257 | S-adenosyl-L-methionine + pseudouridine in 5'-GAUPsiCAACGCC-3' |
- |
Methanocaldococcus jannaschii DSM 2661 |
S-adenosyl-L-homocysteine + N1-methylpseudouridine in 5'-GAUmethylPsiCAACGCC-3' |
- |
? |