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RNA methyltransferase, TrmA family
Polynucleotide adenylyltransferase region
Methionyl-tRNA formyltransferase
tRNA-dihydrouridine synthase
Endoribonuclease L-PSP
GCN5-related N-acetyltransferase
Pseudouridine synthase
Translation initiation factor IF-3
Ribonuclease, Rne/Rng family