Positioning Crenarchaeal tRNA-Introns
Smarajit Das, Zhumur Ghosh, Jayprokas Chakrabarti, Bibekanand Mallick, Satyabrata Sahoo
Abstract
We precisely position a noncanonical intron in the odd second copy of tRNAAsp(GTC) gene in the newly sequenced crenarchaea S.acidocaldarius. The uniform assortment of some features from normal aspartate tDNA and some from those corresponding to non-standard amino acids conduce us to conjecture it to be a novel tRNA gene, probably coding for a modified aspartate residue. Further we reposition intron in tRNAHis(GUG) gene in P.aerophilum.The BHB motif at the exon-intron boundaries are re-analyzed and found to support our conjectures.
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