Antibiotics

Ionomycin calcium is a potent calcium ionophore, which is derived from natural sources such as certain Streptomyces species. Its primary mode of action involves facilitating the translocation of calcium ions (Ca^2+) across biological membranes, specifically transporting them from external environments or intracellular stores into the cytoplasm. This action significantly elevates intracellular calcium levels.

Piericidin A is a microbial metabolite, specifically a type of polyketide, which is derived from the bacterium of the genus Streptomyces. This compound acts as an electron transport chain inhibitor by specifically binding to the ubiquinone binding site of complex I (NADH:ubiquinone oxidoreductase) in mitochondria. This mode of action results in the disruption of ATP production through oxidative phosphorylation.

10, 11-Dehydrocurvularin is a fungal phytotoxin with heat shock response and immune-modulatory activitie. Curvularins inhibit the expression of the inducible nitric oxide synthase (iNOS), thereby acting as anti-inflammatory agents and immune system modulators

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.

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.

Loracarbef monohydrate is a synthetic antibiotic, which is derived from carbacephem compounds with a mode of action that involves inhibiting bacterial cell wall synthesis. This is achieved by binding to penicillin-binding proteins, thereby blocking the cross-linking of peptidoglycan chains which are crucial for bacterial cell wall structural integrity.

Virginiamycin - Complex of M1+S1 is an antibiotic compound, which is derived from the actinobacterium Streptomyces virginiae. It functions through the inhibition of bacterial protein synthesis by binding to the 50S ribosomal subunit, thereby obstructing peptide bond formation and impeding microbial growth. The complex is composed of two major components: Virginiamycin M1 and Virginiamycin S1, which synergistically enhance antimicrobial efficacy.

Metabolite of rifampicin

PC 190723 is a synthetic chemical compound, which is derived through targeted chemical synthesis processes involving precise organic reactions. Its mode of action involves disrupting cellular division by inhibiting specific protein functions essential for the mitotic process. This molecular interaction results in potent effects on cell division, making it a valuable tool for studying cellular mechanics and developing therapeutic strategies.

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.

Phleomycin is an antibiotic, which is derived from the bacterium *Streptomyces verticillus*. Its mode of action involves binding to DNA and inducing breaks by generating free radicals in the presence of oxygen and ferrous ions, leading to cell death. Phleomycin is prominently used in molecular biology applications as a selective agent in the generation of stable transfectants. It is particularly effective in selecting for cells that have integrated vectors conferring resistance, such as the Sh ble gene used in yeast, plant, and mammalian cell systems. Due to its potent DNA-cleaving ability, Phleomycin is valuable in studies requiring stringent selection pressure. Researchers commonly utilize it in experiments focusing on genetic modification and cellular resistance development.

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.

Inhibitor of protein synthesis; glycylcycline class

Nigericin transports cations across the membrane of the cell and it is used to study anion transport. It can be used as a buffer to control pH value inside of the cell.

(E)-10,11-Didehydro-11-deoxy-6-O-methylerythromycin is a semisynthetic macrolide antibiotic, which is derived from erythromycin, a natural product obtained from the bacterium *Saccharopolyspora erythraea*. This compound functions as an inhibitor of protein synthesis by binding to the 50S ribosomal subunit of bacteria, thus preventing the growth and proliferation of susceptible bacterial strains. The alteration in its chemical structure, notably the methylation at the 6-O position, enhances its stability and improves its pharmacokinetic profile compared to the parent compound, erythromycin.