Features of a 103-kb gene-rich region in soybean include an inverted perfect repeat cluster of CHS genes comprising the I locus.

@article{Clough2004FeaturesOA,
  title={Features of a 103-kb gene-rich region in soybean include an inverted perfect repeat cluster of CHS genes comprising the I locus.},
  author={Steven John Clough and Jigyasa H. Tuteja and Min Li and Laura Fredrick Marek and Randy C. Shoemaker and Lila O. Vodkin},
  journal={Genome},
  year={2004},
  volume={47 5},
  pages={
          819-31
        }
}
The I locus in soybean (Glycine max) corresponds to a region of chalcone synthase (CHS) gene duplications affecting seed pigmentation. We sequenced and annotated BAC clone 104J7, which harbors a dominant i(i) allele from Glycine max 'Williams 82', to gain insight into the genetic structure of this multigenic region in addition to examining its flanking regions. The 103-kb BAC encompasses a gene-rich region with 11 putatively expressed genes. In addition to six copies of CHS, these genes include… 
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