Enramycin A is a lipopeptide antibiotic that has been found in S. fungicidicus.[1] It also inhibits avian myeloblastosis virus reverse transcriptase by 50% when used at a concentration of 10 µg/ml in a cell-free assay.[2] Formulations containing enramycin A have been used as feed additives to prevent bacterial necrotic enteritis in livestock.
References:
[1].Iwasaki, H., Horii, S., Asai, M., et al.Enduracidin, a new antibiotic. VIII. Structures of enduracidins A and BChem. Pharm. Bull.21(6)1184-1191(1973).
[2].Inouye, Y., Take, Y., Nakamura, S., et al.Screening for inhibitors of avian myeloblastosis virus reverse transcriptase and effect on the replication of AIDS-virusJ. Antibiot. (Tokyo)40(1)100-104(1987).