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Synonyms: IBX | OPP-3
Compound class: Synthetic organic
Comment: Iboxamycin (OPP-3) is an orally bioavailable, synthetic antibacterial compound . Structurally, IBX is built on a oxepanoproline scaffold that is linked to the aminooctose residue of clindamycin. X-ray crystallography shows that IBX binds to the large ribosomal subunit in the bacteria (more effectively than clindamycin) and disrupts translation initiation. Iboxamycin is a novel broad-spectrum agent that is active against Gram-positive and Gram-negative bacteria including ESKAPE pathogens that express resistance-conferring Erm and Cfr ribosomal RNA methyltransferase enzymes.
1. Mitcheltree MJ, Pisipati A, Syroegin EA, Silvestre KJ, Klepacki D, Mason JD, Terwilliger DW, Testolin G, Pote AR, Wu KJY et al.. (2021)
A synthetic antibiotic class overcoming bacterial multidrug resistance.
Nature, 599 (7885): 507-512. [PMID:34707295]