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. 1991 Nov;3(11):1239–1250. doi: 10.1105/tpc.3.11.1239

A scaffold-associated DNA region is located downstream of the pea plastocyanin gene.

R E Slatter 1, P Dupree 1, J C Gray 1
PMCID: PMC160089  PMID: 1821767

Abstract

Chromosomal scaffold-associated DNA has been isolated from pea leaf nuclei treated with lithium diiodosalicylate to remove histones and then digested with restriction enzymes to remove the DNA in chromosomal loops. A scaffold-associated region (SAR) of DNA has been identified 8 to 9 kb downstream of the single-copy pea plastocyanin gene in proximity to a repetitive sequence present in 300 copies in the pea haploid genome. Isolated restriction fragments from within the SAR can bind to scaffold preparations in a binding assay in vitro. The nucleotide sequence of the SAR indicates a 540-bp 77% A+T-rich region containing many sequence elements in common with SARs from other organisms. Sequences with homology to topoisomerase II binding sites, A-box and T-box sequences, and replication origins are present within this AT-rich region.

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Selected References

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