Ghosh Z, Chakrabarti J, Mallick B, Das S, Sahoo S, Sethi HS. tRNA-isoleucine-tryptophan composite gene.
Biochem Biophys Res Commun 2005;
339:37-40. [PMID:
16307727 DOI:
10.1016/j.bbrc.2005.10.183]
[Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2005] [Accepted: 10/24/2005] [Indexed: 11/20/2022]
Abstract
Transfer-RNA genes in archaea often have introns intervening between exon sequences. The structural motif at the boundary between exon and intron is the bulge-helix-bulge. Computational investigations of these boundary structures in Haloarcula marismortui lead us to propose that tRNA-isoleucine and tRNA-tryptophan genes are co-located. Precise in silico identification of the splice-sites on the bulges at the exon-intron boundaries lead us to infer that a single intron-containing composite tRNA-gene can give rise to more than one gene product.
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