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5 protocols using amsacrine

1

Transduction of S. aureus using Φ85 bacteriophage

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S. aureus was grown in tryptic soy broth (TSB) or on TSB with 1.5% agar at 30 °C. Transduction was performed using Φ85 as described40 (link). Antibiotic concentrations used were 5 μg/ml erythromycin (Erm). Amsacrine was purchased from Abcam (ab142742). E. coli DNA gyrase (TG2000G) and DNA gyrase assay kit (TG1003) was purchased from TopoGEN.
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2

Preparation and Characterization of Short-Chain Fatty Acids

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SCFAs were purchased from Sigma-Aldrich Inc. (St. Louis, MO, United States). SCFAs were dissolved in endotoxin-free distilled water (Dai Han Pharm Co. Ltd., Seoul, South Korea) and filtered with a syringe filter (0.2 μm) purchased from Corning (Corning, NY, United States) prior to use. Luria-Bertani (LB) broth was purchased from LPS solution (Daejeon, South Korea). Trypticase soy broth (TSB) and Bacto agar were purchased from BD Biosciences (Franklin Lakes, NJ, United States). 2,2,2-Tribromoethanol and 2-methyl-2-butanol were purchased from Sigma-Aldrich Inc. Amsacrine (AMSA) was purchased from Abcam (Cambridge, United Kingdom). Hematoxylin and eosin were purchased from Sigma-Aldrich Inc. and BBC Biochemical (Mount Vernon, WA, United States), respectively. Crystal violet and safranin were purchased from Sigma-Aldrich Inc. Iodide solution was purchased from Samchun Chemicals (Seoul, South Korea).
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3

Screening S. aureus with Chemical Analogs

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S. aureus was grown in tryptic soy broth (TSB) or on TSB with 1.5% agar at 30°C. High-throughput screening was done at the ICCB-Longwood Screening Facility. DBI-1 and DBI-3 were purchased from Life Chemicals (catalog numbers F0715-0438 and F2553-0110 respectively). Analogs DBI-2, DBI-4, DBI-5, and DBI-6 were purchased from Life Chemicals (catalog numbers Z763933882, Z27852313, Z119631630 and Z27772254 respectively). Amsacrine was purchased from Abcam (ab142742).
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4

Transduction of S. aureus using Φ85 bacteriophage

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S. aureus was grown in tryptic soy broth (TSB) or on TSB with 1.5% agar at 30 °C. Transduction was performed using Φ85 as described40 (link). Antibiotic concentrations used were 5 μg/ml erythromycin (Erm). Amsacrine was purchased from Abcam (ab142742). E. coli DNA gyrase (TG2000G) and DNA gyrase assay kit (TG1003) was purchased from TopoGEN.
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5

Microbial Transduction and Protein Expression

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Strains are listed in Supplementary Table 5. S. aureus was grown in tryptic soy broth (TSB) or on TSB with 1.5% agar at 30 and 37 °C. Phage 80alpha was used for transductions and the methods for transduction were described previously40 (link). All constructed LCP-pET28-plasmids were transformed into NovaBlue(DE3) E. Coli, and LCP proteins were overexpressed in BL21(DE3) E. Coli grown in lysis broth (LB). Antibiotics were used at the following concentrations: 10 µg ml−1 chloramphenicol, 10 µg ml−1 erthromycin, 50 µg ml−1 kanamycin, 50 µg ml−1 neomycin, 50 µg ml−1 carbenicillin. L-[14C]-Glycerol-3-phosphate was purchased from Person-Elmer. UDP-[14C]-GlcNAc was purchased from American Radiolabeled Chemicals, Inc (ARC). Amsacrine was purchased from Abcam (ab142742).
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