Nucleic Acids Research, 1985, Vol. 13, No. 9 3213-3220
© 1985
Articles |
Structure and transcription of the tRNA1Pro gene from Escherichia coli
Biology Division, Nationa Cancer Center Research Institute 5-1-1, Tsukiji, Chuo-ku, Tokyo 104, Japan
Received February 5, 1985. Revised April 10, 1985. Accepted April 10, 1985.
A 5 kbp DNA fragment containing the
gene from Escherichia coli was cloned into Charon 21A phage and sequenced by the M13 DNA sequencing technique. When the cloned DNA fragment was used as a template for in vitro transcription with E. coli RNA polymersse, a
precursor of 120 nucleotide residues was obtained. The
gene transcribed as a single transcription unit was followed by two unusual repeating sequences, both of 108 bp. These two repeating sequences were separated by a 60 bp spacer sequence. The 5'-portion of each repeating sequence overlapped 19 bp of the 3'-terminal region of the
gene just like the repeating sequences in the E. coli
gene. A rho-independent termination was present in the first repeating unit.
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