Antibiotics

26-Oxofusidic acid is a derivative of fusidic acid, which is a potent antibacterial compound originally isolated from the fungus Fusidium coccineum. This compound exhibits a unique mode of action by inhibiting bacterial protein synthesis through interference with the elongation factor G (EF-G), a critical component in the translocation step of translation. By targeting this specific aspect of bacterial metabolism, 26-Oxofusidic acid effectively disrupts the growth of gram-positive bacteria, making it an invaluable tool in combating resistant bacterial strains.

Trovafloxacin mesylate is a synthetic antibiotic belonging to the fluoroquinolone class, which is derived from chemical synthesis processes rather than natural sources. The mode of action of trovafloxacin mesylate involves the inhibition of bacterial enzymes DNA gyrase and topoisomerase IV. These enzymes are essential for DNA replication, repair, and transcription within the bacterial cell. By inhibiting these enzymes, trovafloxacin mesylate disrupts bacterial DNA processes, leading to cell death and exerting its antibacterial effects.

Oligomycin B is an antibiotic compound, which is derived from Streptomyces species. It is an inhibitor of the mitochondrial ATP synthase complex, specifically targeting the F₀ subunit of ATP synthase. This action obstructs the proton channel, preventing the flow of protons across the mitochondrial membrane. As a result, Oligomycin B effectively halts ATP synthesis by oxidative phosphorylation, which is crucial for the survival of aerobic organisms.

Lydicamycin is an antibacterial compound, which is a polyketide-derived antibiotic produced by the microorganism Streptomyces. This natural compound functions by inhibiting bacterial protein synthesis, effectively interrupting critical cellular processes within susceptible bacteria. The mode of action primarily focuses on binding to the bacterial ribosome, thereby disrupting protein production and inhibiting bacterial growth.

Clarithromycin-13CD3 is an isotopically labeled macrolide antibiotic, which is synthesized to include deuterium (D) and carbon-13 (^13C) in its molecular structure. This modified compound serves as a stable isotope-labeled standard, primarily sourced from chemical synthesis. The incorporation of these isotopes differentiates it from the naturally occurring antibiotic, enabling its use in precise analytical studies.

Thienamycin is a β-lactam antibiotic, which originates from the fermentation of the bacterium *Streptomyces cattleya*. Its mode of action involves inhibiting the synthesis of bacterial cell walls. Thienamycin accomplishes this by binding to penicillin-binding proteins (PBPs) critical for peptidoglycan construction, thereby disrupting cell wall integrity and leading to bacterial lysis.

Tri-O-benzyl FR 900098 is a chemical compound, often referenced in biochemical research contexts. It is a synthetic derivative that originates from complex chemical synthesis, involving multiple benzylation steps to modify the original molecular framework. This structural transformation lends the compound unique chemical properties.

Mitomycin C analogue

Tyrothricin is a peptide antibiotic, which is derived from the bacterium Bacillus brevis. This compound comprises a mixture of polypeptides, primarily gramicidin and tyrocidine, both of which are instrumental in its antimicrobial activity. The mode of action of tyrothricin involves disrupting bacterial cell membranes, leading to cell lysis and death. Gramicidin increases the permeability of the bacterial membrane to ions, while tyrocidine promotes disruption of membrane integrity, which together exert bactericidal and bacteriostatic effects.

Tropodithietic acid is a bioactive compound, which is a potent antibacterial agent derived from certain marine bacteria, including the genus Phaeobacter. This antibiotic is characterized by its ability to disrupt quorum sensing, a mechanism that bacteria use for communication and coordination of group behaviors, including virulence. By interfering with this process, tropodithietic acid impedes bacterial colonization and biofilm formation, effectively inhibiting pathogenic activity.

Metabolite of rifampicin

Narasin is an ionophore antibiotic, which is a fermentation product derived from certain strains of the bacterium *Streptomyces aureofaciens*. It functions by disrupting the ion gradients across cell membranes, specifically facilitating the transport of sodium and potassium ions. This action interferes with the energy metabolism of certain pathogenic microorganisms, rendering them unable to proliferate effectively.

Pirlimycin HCl is an antibacterial product, which is a semi-synthetic derivative of the natural antibiotic lincomycin produced by Streptomyces lincolnensis. Its mode of action involves the inhibition of bacterial protein synthesis by binding to the 50S ribosomal subunit, thereby preventing the elongation of peptide chains. This action is particularly effective against Gram-positive bacteria, including Staphylococcus and Streptococcus species.

Cefotiam is a broad-spectrum cephalosporin antibiotic, which is a beta-lactam compound derived from the mold Acremonium. It functions by inhibiting bacterial cell wall synthesis, particularly by targeting penicillin-binding proteins, which leads to cell lysis and death in susceptible bacteria. This mechanism of action makes it effective against various Gram-positive and Gram-negative bacteria.

Sitafloxacin is an antibacterial agent belonging to the fluoroquinolone class of antibiotics, which is synthetically derived from chemical processes involving fluorinated quinolones. Its mode of action involves the inhibition of bacterial DNA gyrase and topoisomerase IV, enzymes crucial for bacterial DNA replication and transcription. By interfering with these enzymes, Sitafloxacin effectively hampers bacterial DNA synthesis, leading to the eventual demise of the bacterial cell.

N-Biotinyl-12-aminododecanoyltobramycin amide is a synthetic bioconjugate, which is derived from the aminoglycoside antibiotic tobramycin. This compound is chemically modified by the addition of a biotin moiety linked through a 12-aminododecanoyl spacer. The source of this product is rooted in the conjugation of biotin to tobramycin, allowing for targeted delivery and potential hybrid applications in both therapeutic and diagnostic fields.

DprE1-IN-8 is a potent inhibitor of DprE1, exhibiting an IC50 of less than 0.75 μM.

Gentamicin C2 sulfate is an aminoglycoside antibiotic with action on bacterial protein synthesis inhibition and is used for treating severe bacterial infections.

Doripenem is a carbapenem antibiotic with action on bacterial cell wall synthesis and is used for treating complicated bacterial infections like intra-abdominal infections and urinary tract infections.