Nucleic Acids Research, 1982, Vol. 10, No. 5 1653-1659
© 1982
MOLECULAR BIOLOGY |
The nucleotide sequence of the maize and spinach chloroplast isoleucine transfer RNA encoded in the 16S to 23S rDNA spacer
Institut de Biologie Moléculaire et Cellulaire, Université Louis Pasteur 15, rue Descartes, 67084 Strasbourg Cedex, France
Received November 16, 1981. Revised January 19, 1982. Accepted January 29, 1982.
The sequence of maize chloroplast tRHA, encoded in the 16S to 23S rDNA spacer, was determined using in vitro labeling techniques. The sequence is : -AOH. This sequence is identical to that predicted from the corresponding gene sequence, after excision of a long intervening sequence (1), but shows the post-transcriptional modifications of this tBNA. Furthermore it demonstrates that the excision of the intron occurs after the second base following the anticodon and that this gene, which is over 1000 base-pair long, is transcribed and processed into a mature functional chloroplaet tENA. The sequence of maize (a monocot) and spinach (a dicot) tRNA are shown to be identical.