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A polypeptide quinoxaline antineoplastic antibiotic isolated from the bacterium Streptomyces echinatus. Echinomycin intercalates into DNA at two locations simultaneously in a sequence-specific fashion, thereby inhibiting DNA replication and RNA synthesis. Check for \'https://www.cancer.gov/about-cancer/treatment/clinical-trials/intervention/C462\' active clinical trials using this agent. (\'http://ncit.nci.nih.gov/ncitbrowser/ConceptReport.jsp?dictionary=NCI%20Thesaurus&code=C462\' NCI Thesaurus)
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