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. 1998 Jun 15;26(12):3026–3033. doi: 10.1093/nar/26.12.3026

Conservation and continuity of periodic bent DNA in genomic rearrangements between the c-myc and immunoglobulin heavy chain mu loci.

R Ohki 1, M Hirota 1, M Oishi 1, R Kiyama 1
PMCID: PMC147631  PMID: 9611251

Abstract

Periodic bent DNA was mapped in the human c- myc and immunoglobulin heavy chain mu (Ig mu) loci. A total of 12 DNA bend sites in the c- myc gene and 11 sites in the Ig mu locus were aligned at average intervals of 694.2 +/- 281.4 and 654.5 +/- 222.7 bp respectively. Although some of the bend sites retained the distance of 700 bp, their periodicity was disturbed at several locations, including the exons of the c- myc gene and the enhancer element present in the Ig mu locus. Analysis of rearrangements that resulted in tumorigenesis of lymphocytes showed that the continuity of DNA bend sites was conserved in three lymphoma cell lines, Manca, BL22 and Ramos, suggesting that the genomic rearrangements gain stability by retaining their periodicity. This adds further evidence that the periodic bent DNA plays a crucial role in genomic structure.

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Selected References

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