Matrix attachment regions and transcribed sequences within a long chromosomal continuum containing maize Adh1.

作者：Zoya V. AVRAMOVA, Phillip J. SanMiguel, Elena Georgieva, Jeffrey L. Bennetzen · 发表于：The Plant Cell · 年份：1995 · DOI：10.1105/tpc.7.10.1667 · 被引用次数：57 · 研究领域：Chromosomal and Genetic Variations、Genetic Mapping and Diversity in Plants and Animals、Plant Disease Resistance and Genetics

We provide evidence for the location of matrix attachment sites along a contiguous region of 280 kb on maize chromosome 1. We define nine potential loops that vary in length from 6 kb to > 75 kb. The distribution of the different classes of DNA within this continuum with respect to the predicted structural loops reveals an interesting correlation: the long stretches of mixed classes of highly repetitive DNAs are often segregated into topologically sequestered units, whereas low-copy-number DNAs (including the alcohol dehydrogenase1 [adh1] gene) are positioned in separate loops. Contrary to expectations, several classes of highly repeated elements with representatives in this region were found to be transcribed, and some of these exhibited tissue-specific patterns of expression.