Abstract
Nuclear matrices were isolated from maize leaves by the two conventional methods usually employed for the preparation of the corresponding structures of animal origin. It is demonstrated that functionally competent matrices, recognizing and specifically binding the MAR-containing DNA of the mousek-immunoglobulin gene may be prepared by both 2 M NaCl and LIS extractions of maize nuclei.
A DNA region with a high affinity for the nuclear matrix was identified at the 5′ end of the maizeAdh1-S gene, distal to the promoter region. The presence of sites of reported altered chromatin structure in this particular region is discussed. While the proximity and the cohabitation of MARs with different regulatory elements is a common feature of matrix association regions in animal systems, this is the first plant MAR identified in a region of known significance for gene regulation.
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Avramova, Z., Bennetzen, J.L. Isolation of matrices from maize leaf nuclei: identification of a matrix-binding site adjacent to theAdh1 gene. Plant Mol Biol 22, 1135–1143 (1993). https://doi.org/10.1007/BF00028982
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DOI: https://doi.org/10.1007/BF00028982