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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 (tRNASer-UCR) at position 334, 431–334,486; including the CCA-end that exactly matched the 3′ terminal domain of the annotated M. jannaschii tRNASer-UCRgene located at position 303, 992–304, 081. This truncated tRNA gene covering 56 nucle-otides (about 2/3) of the genuine tRN A represents, to the best of our knowledge, the first described tRNA pseudogene in the archaeal domain.