Gene organization of the AtCBR
gene. A, AtCBR gene organization. Open boxes with
numbers show the exons, and bars between open boxes show introns. B,
Southern analysis of the AtCBR gene. One microgram of
genomic DNA was digested with the indicated restriction enzymes and
probed with [α-32P]dCTP-labeled AtCBR cDNA. E,
EcoRI; B, BamHI; X,
XhoI.