Biopolymers and cell. 1989. Volume 5. № 4. 58 - 62

V. A. Vakhitov, Yu. M. Nikonorov

NUCLEOTIDE SEQUENCE OF LARGE 5S DNA REPEAT IN DIPLOID WHEAT TRITICUM MONOCOCCUM L.

Summary

    Nucleotide sequence of large 5S DNA repeated unit 485 base pairs long, was determined in diploid wheat Trlticum monococcum. The differences in length in two families of 5S DNS repeats in this wheat species are shown to be related to 154 b. p. deletion in central region of intergenic spacer. A high homology of 5S rRNA coding regions, terminating sequences, 3'-ends in intergenic spacers in both families of 5S DNA repeats and aiso in repeats of similar length in two samples of T. monococcum is shown. Contrary to dicotyledon plants ATATATATTA sequence in cereal species under investigation is found to be located nearer to 5'-end of the intergenic spacer.