A transcriptional repressor complex that contains the lin-9, lin-35, lin-37, lin-52, lin-53, lin-5is involved in 4-, dpl-1 and efl-1 proteins, and is involved in cell fate specification.
Catalysis of the reaction: S-adenosylmethionine + 7-(aminomethyl)-7-deazaguanosine-tRNA = adenine + methionine + epoxyqueuosine-tRNA. 7-(aminomethyl)-7-deazaguanosine-tRNA is also known as preQ1-tRNA, and epoxyqueuosine-tRNA as oQ-tRNA.