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Fig. 1. met-1 and met-2 gene structures, mutations and
predicted protein structures. (A) The genomic structures of C.
elegans met-1 and met-2. Exons are represented by black boxes,
3' untranslated regions by white boxes. The alternatively spliced exon
six of met-1 is depicted as a white, stippled box. The locations of
the deletion alleles are shown. (B) The domain structures of the MET-1
and MET-2 proteins.