Figure 5.

Comparison of the chloronerva gene to other DNA sequences. The alignment of the chloronerva gene (NATOMATO) to the purified nicotianamine synthase (NABARLEY) from barley is displayed. Furthermore, a comparison of the two genomic sequences (ARA1 and ARA5) from the A. thaliana genome on chromosome 1 (GenBank accession no. AC003114) and 5 (GenBank accession no. AB005245), respectively, is shown. Amino acids matching in all four proteins are marked by ∗. Additional amino acids shared between the chloronerva gene and nicotianamine synthase of barley are marked by #. The phenylalanine that has been changed to a serine in the chloronerva mutant is shown in bold. Note that this amino acid is highly conserved in all four genes.