{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T00:48:52Z","timestamp":1790729332804,"version":"4.1.0"},"reference-count":42,"publisher":"American Society for Microbiology","issue":"5","license":[{"start":{"date-parts":[[2002,5,1]],"date-time":"2002-05-01T00:00:00Z","timestamp":1020211200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.asm.org\/non-commercial-tdm-license"}],"content-domain":{"domain":["journals.asm.org"],"crossmark-restriction":true},"short-container-title":["Antimicrob Agents Chemother"],"published-print":{"date-parts":[[2002,5]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n          <jats:p>\n            Thiolactomycin (TLM) is an antibiotic that inhibits bacterial type II fatty acid synthesis at the condensing enzyme step, and \u03b2-ketoacyl-acyl carrier protein synthase I (FabB) is the relevant target in\n            <jats:italic>Escherichia coli<\/jats:italic>\n            . TLM resistance is associated with the upregulation of efflux pumps. Therefore, a\n            <jats:italic>tolC<\/jats:italic>\n            knockout mutant (strain ANS1) was constructed to eliminate the contribution of type I secretion systems to TLM resistance. Six independent TLM-resistant clones of strain ANS1 were isolated, and all possessed the same missense mutation in the\n            <jats:italic>fabB<\/jats:italic>\n            gene (T1168G) that directed the expression of a mutant protein, FabB(F390V). FabB(F390V) was resistant to TLM in vitro. Leucine is the only other amino acid found at position 390 in nature, and the\n            <jats:italic>Staphylococcus aureus<\/jats:italic>\n            FabF protein, which contains this substitution, was sensitive to TLM. Structural modeling predicted that the CG2 methyl group of the valine side chain interfered with the positioning of the C11 methyl on the isoprenoid side chain of TLM in the binary complex, whereas the absence of a bulky methyl group on the leucine side chain permitted TLM binding. These data illustrate that missense mutations that introduce valine at position 390 confer TLM resistance while maintaining the vital catalytic properties of FabB.\n          <\/jats:p>","DOI":"10.1128\/aac.46.5.1246-1252.2002","type":"journal-article","created":{"date-parts":[[2002,7,27]],"date-time":"2002-07-27T10:09:01Z","timestamp":1027764541000},"page":"1246-1252","update-policy":"https:\/\/doi.org\/10.1128\/asmj-crossmark-policy-page","source":"Crossref","is-referenced-by-count":33,"title":["A Missense Mutation in the\n            <i>fabB<\/i>\n            (\u03b2-Ketoacyl-Acyl Carrier Protein Synthase I) Gene Confers Thiolactomycin Resistance to\n            <i>Escherichia coli<\/i>"],"prefix":"10.1128","volume":"46","author":[{"given":"Suzanne","family":"Jackowski","sequence":"first","affiliation":[{"name":"Protein Science Division, Department of Infectious Diseases"},{"name":"Department of Molecular Sciences, University of Tennessee Health Science Center, Memphis, Tennessee 38163"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yong-Mei","family":"Zhang","sequence":"additional","affiliation":[{"name":"Protein Science Division, Department of Infectious Diseases"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Allen C.","family":"Price","sequence":"additional","affiliation":[{"name":"Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, Tennessee 38105"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stephen W.","family":"White","sequence":"additional","affiliation":[{"name":"Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, Tennessee 38105"},{"name":"Department of Molecular Sciences, University of Tennessee Health Science Center, Memphis, Tennessee 38163"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Charles O.","family":"Rock","sequence":"additional","affiliation":[{"name":"Protein Science Division, Department of Infectious Diseases"},{"name":"Department of Molecular Sciences, University of Tennessee Health Science Center, Memphis, Tennessee 38163"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"235","reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.1139\/o59-099"},{"key":"e_1_3_2_3_2","doi-asserted-by":"crossref","first-page":"1029","DOI":"10.1016\/0006-291X(80)90522-7","volume":"94","year":"1980","unstructured":"Booth, B. 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