Figure 7.

Genomic DNA sequence of naat-A and naat-B in a tandem array. A, Organization of the genomic clone (11.0 kb) that contains both the naat-B and naat-A genes (arrow points from the 5′ to the 3′ end). The naat-A and naat-B genes each contain seven exons (hatched boxes). Arrowheads show the restriction sites for (E) EcoRI, (H) HindIII, and (B) BamHI. B, Organization of the naat-A and naat-B genes. Triangles show the six intron insertion positions in each gene. The numbers of nucleotides in each intron are indicated.