Intergenic region between Dgri\Yp2 and Dgri\Yp1, extending to +10bp of Dgri\Yp2 and +40bp of Dgri\Yp1 is placed between lacZ and Tn9CAT coding regions, such that the Dgri\Yp1 promoter is adjacent to lacZ and the Dgri\Yp2 promoter is adjacent to Tn9CAT.
Intergenic region between Dgri\Yp2 and Dgri\Yp1, extending to +10bp of Dgri\Yp2 and +40bp of Dgri\Yp1 is placed between lacZ and Ecol\CAT coding regions, such that the Dgri\Yp1 promoter is adjacent to lacZ and the Dgri\Yp2 promoter is adjacent to Ecol\CAT.