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MAT and the cryptic mating loci on chromosome III of S. cerevisiae. The genes in the mating loci, HML- and HMR-neighboring genes, the E and I silencers, and the binding sites for ORC, Rap1, and Abf1 in the silencers are shown. The boxes around the mating-type genes represent the sequences shared between the MAT and the HML and HMR loci. The Saccharomyces cerevisiae genome feature coordinates are in Table S2.
