Sequence alignment of the predicted GS enzymes of A. nidulans (accession no. AF333968), S. pombe (accession no. Z98977), Colletotrichum gloesosporoides (accession no. Q12613), Nectria haematococca (accession no. AF175498.1), S. cerevisiae (accession no. M65157), and Anabaena sp. (accession no. X00147). The sequences were aligned using CLUSTAL W (45), and identical amino acids (solid boxes) and conservative substitutions (shaded boxes) are indicated.