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Restriction map of the 75-kb sgc gene cluster from S. globisporus as represented by three cosmid clones (A), and genetic organization of the sgcA, sgcB, and cagA genes, showing that they are clustered in the sgc gene cluster (B). Probe 1, the 0.55-kb NDGH gene fragment from pBS1002; probe 2, the 0.73-kb cagA fragment from pBS1003. A, ApaI; B, BamHI; E, EcoRI; K, KpnI, S, SacII; Sp, SphI.
