Sequence analysis of a cluster of twenty-one tRNA genes inBacillus subtilis
Author(s) -
Christopher J. Green,
Barbara S. Vold
Publication year - 1983
Publication title -
nucleic acids research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 9.008
H-Index - 537
eISSN - 1362-4954
pISSN - 0305-1048
DOI - 10.1093/nar/11.16.5763
Subject(s) - biology , transfer rna , gene cluster , gene , genetics , rna polymerase iii , terminator (solar) , structural gene , rna polymerase , rna , escherichia coli , ionosphere , physics , astronomy
The DNA sequence of a cluster of twenty-one tRNA genes distal to a rRNA gene set in B. subtilis was determined. None of the tRNA genes are repeated in the sequence. The only classes of tRNAs that are not represented are those for cysteine, glutamine, tryptophan, and tyrosine. Three of the tRNA genes in this cluster do not have the 3'-CCA sequence encoded in the gene. There is no RNA polymerase terminator sequence in the region between the 5S gene and the first tRNA gene or within the tRNA gene cluster. A terminator sequence was found directly after the last tRNA gene. This rRNA and tRNA gene cluster probably represents one transcriptional unit. However, there may be an RNA polymerase promoter site within this sequence, which raises some interesting questions concerning the regulation of transcription for these tRNA genes.
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