ISSN:
1574-6968
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Biology
Notes:
Abstract From the nucleotide sequence of a 2110-bp Streptomyces lividans 66 DNA fragment two transfer RNA genes were identified: tRNASer (AGC) and tRNAArg (CGU). These tRNA genes are transcribed from the same DNA strand and both are preceded by a putatife promoter structure. They are separated by an intergenic region of 191 bp. Like most Streptomyces tRNA genes described so far, they do not encode the 3′ terminal CCA of mature tRNAs. Both genes are followed by extensive inverted repeats, which could serve as transcriptional terminator signals. Remarkably, these hairpin structures share an identical 9 base pair stretch (5′-GAAGCCCCG-3′). Furthermore, the tRNAArg region is followed by two potential open reading frames, which are encoded on complementary strands and have 3′ overlapping ends. The gene for tRNAArg (CGU) is the first Streptomyces tRNA gene described so far which encodes the translation of a codon with uridine at the third (wobble) position.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1574-6968.1993.tb06170.x
