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Comparative Study
. 1986 Jun 25;14(12):4969-86.
doi: 10.1093/nar/14.12.4969.

Occurrence of 9 homologous repeat units in the external spacer region of a nuclear maize rRNA gene unit

C Toloczyki, G Feix
Free PMC article
Comparative Study

Occurrence of 9 homologous repeat units in the external spacer region of a nuclear maize rRNA gene unit

C Toloczyki et al. Nucleic Acids Res. .
Free PMC article

Abstract

A 14 kb maize DNA fragment carrying nuclear rRNA genes and spacer regions was isolated and characterised by restriction enzyme mapping. A complete 3020 bp long external spacer region was sequenced and revealed 9 tandemly arranged 200 bp long repeat units with high homology. The repeat units lie upstream from two prominent S1 mapping signals. The sequence of a typical repeat unit is compared to a corresponding 130 bp long wheat repeat unit. The possible functional relevance of the repeat units is discussed.

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References

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