Abstract

While searching the first completely sequenced genome of the archaeon Methanococcus jannaschii for a small RNA gene, we discovered a 5' truncated gene of a transfer RNA (tRNA(Ser-UCR)) at position 334,431-334,486; including the CCA-end that exactly matched the 3' terminal domain of the annotated M. jannaschii tRNA(Ser-UCR) gene located at position 303,992-304,081. This truncated tRNA gene covering 56 nucleotides (about 2/3) of the genuine tRNA represents, to the best of our knowledge, the first described tRNA pseudogene in the archaeal domain.

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