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FscRI activates antBA and antCDE expression. LC-HRESI-MS analysis of chemical extracts prepared from S. coelicolor M1146 harboring variants of cosmid 213 engineered as shown here and pIJ10257 or pIJ10257-fscRI as indicated. The extracted ion chromatograms (M+H)+ for antimycins A1 to A4 are shown for each strain.
