Antibiotiques

<p>Clindamycin-2,3-diphosphate is a biochemical compound, which is derived from the antibiotic clindamycin, sourced through chemical modification to include diphosphate groups. Its mode of action involves inhibiting bacterial protein synthesis by binding to the 50S ribosomal subunit, thus interfering with peptide chain initiation and elongation. This disruption effectively halts bacterial growth, particularly in Gram-positive bacteria, and is crucial in combatting infections resistant to other antibiotics.</p>

<p>Aphidicolin is a tetracyclic diterpenoid that acts as a potent inhibitor of DNA polymerase. Derived from the fungus *Cephalosporium aphidicola*, it is primarily identified for its ability to impede DNA synthesis by targeting eukaryotic DNA polymerase α. This selective inhibition disrupts replication processes, making it a crucial tool for studying cell cycle dynamics.</p>

<p>Finafloxacin is a fluoroquinolone antibacterial agent, which is a synthetic compound derived from the quinolone family. It functions through the inhibition of bacterial DNA gyrase and topoisomerase IV, crucial enzymes in the replication, transcription, and repair of bacterial DNA. This mechanism leads to the prevention of bacterial cell division and ultimately results in cell death.</p>

<p>6,11-Di-O-methyl erythromycin is a semi-synthetic derivative of erythromycin, which is a macrolide antibiotic originally sourced from the bacterium *Saccharopolyspora erythraea*. This compound is produced through chemical modification of the natural antibiotic to improve its pharmacokinetic properties, such as stability and absorption.</p>

<p>Norvancomycin trifluoroacetate is an antibiotic compound, which is a glycopeptide derived from the bacterium Amycolatopsis orientalis. Its mode of action involves inhibiting bacterial cell wall synthesis. Specifically, Norvancomycin disrupts the cross-linking of peptidoglycan layers in the bacterial cell wall by binding to the D-alanyl-D-alanine terminus of cell wall precursors. This disruption weakens the bacterial cell wall, ultimately leading to cell lysis and death, thereby exerting a bactericidal effect.</p>

<p>25-Desacetyl rifapentin is a derivative of rifapentin, an antibiotic belonging to the rifamycin class, sourced from the bacterial species *Amycolatopsis rifamycinica*. This compound functions by inhibiting bacterial DNA-dependent RNA polymerase, which is crucial for transcription in susceptible bacterial strains. By inhibiting this enzyme, 25-Desacetyl rifapentin effectively hampers RNA synthesis, ultimately leading to bacterial cell death.</p>

<p>Inhibitor of protein synthesis; macrolide class</p>

<p>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.</p>

<p>Imipenem acts as an antimicrobial through inhibiting cell wall synthesis of various gram-positive and gram-negative bacteria. It remains very stable in the presence of beta-lactamase (both penicillinase andcephalosporinase) produced by some bacteria, and is a strong inhibitor of beta-lactamases from some gram-negative bacteria that are resistant to most beta-lactam antibiotics.</p>

<p>Cyclosporin L is an immunosuppressive agent, which is a cyclic polypeptide derived from the soil fungus Tolypocladium inflatum. It primarily functions by inhibiting the activity of calcineurin, a key phosphatase involved in the activation of T-cells. This inhibition prevents the transcription of interleukin-2 and other cytokines critical for T-cell proliferation.</p>

<p>Sulfadiazine is a sulfonamide antibiotic with action on bacterial folate synthesis inhibition and is used for treating toxoplasmosis and urinary tract infections.</p>

<p>Deacetylanisomycin is a bacterial metabolite, which is derived from the soil bacterium Streptomyces griseolus. It acts as an inhibitor of protein synthesis by binding to the 60S ribosomal subunit, thus interfering with peptide bond formation during translation. This mode of action is key to its effectiveness in studying the mechanisms of protein synthesis interruption.</p>

<p>Rifampicin is a drug that inhibits protein synthesis in bacteria and is used to treat tuberculosis. Rifampicin binds to the beta subunit of the bacterial RNA polymerase, inhibiting transcription and translation. It has been shown to inhibit the acetylcholine receptor function in rats, which may be related to its antituberculosis activity. Histopathological studies have shown that rifampicin inhibits the growth of human tumors in mice, including lung cancer, breast cancer, and leukemia. The drug is also being studied for its potential use in treating Alzheimer's disease. The pharmacokinetics and oral bioavailability of rifampicin have been studied and Rifampicin has been shown to be an effective anti-tuberculosis drug.</p>

<p>Biotinyl tobramycin amide is a biotinylated form of the antibiotic tobramycin, which is derived from the actinobacterium Streptomyces tenebrarius. It features a tobramycin core, a potent aminoglycoside antibiotic, chemically linked to biotin. This modification allows for the specific attachment to avidin or streptavidin-labeled probes due to the strong biotin-streptavidin interaction, facilitating various labeling and detection techniques in research.</p>

<p>Desmethyl doxorubicin oxalate is an anthracycline-type chemotherapeutic agent, which is derived from the naturally occurring antibiotic doxorubicin. This compound comprises a desmethylated form of doxorubicin combined with oxalate. Its mode of action involves intercalating DNA strands and inhibiting topoisomerase II, thereby disrupting DNA replication and transcription. This interference leads to the inhibition of cancer cell proliferation and induces apoptosis.</p>

<p>Cefonicid is a semisynthetic cephalosporin antibiotic, which is derived from the naturally occurring compound cephalosporin C, obtained from the mold *Cephalosporium acremonium*. Its mode of action involves inhibiting bacterial cell wall synthesis by binding to penicillin-binding proteins, leading to cell lysis and death, thereby exhibiting bactericidal activity.</p>

<p>PNU 142300 is a non-peptidyl anticoagulant, which is a synthetically derived small molecule. This compound is sourced from advanced chemical synthesis techniques that focus on mimicking biological activity through non-biological materials. PNU 142300 acts by specifically inhibiting factor Xa, a crucial enzyme in the coagulation cascade responsible for the conversion of prothrombin to thrombin. By targeting this enzyme, it effectively prevents the formation of blood clots, thereby exhibiting potent anticoagulant properties.</p>

<p>Cephalosporin antibiotic active against gram-positive bacteria including MRSA</p>

<p>Ionomycin is an ionophore compound with a mode of action that facilitates calcium ion transport across cell membranes. It is used in research to study calcium signaling and T-cell activation.</p>

<p>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.</p>

<p>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.</p>

<p>Kanamycin A Related Compound 1 is an analytical reference standard, which is derived from aminoglycoside antibiotics. Its source stems from the chemical structures related to the aminoglycoside class, primarily used to ensure precise identification and quantification of kanamycin residues or impurities in pharmaceutical formulations. The mode of action of Kanamycin A Related Compound 1 involves serving as a comparator or reference point in chromatographic and spectroscopic methods, facilitating accurate analysis by providing a consistent baseline for research laboratories.</p>

<p>6'-N-Cbz-kanamycin A is a semi-synthetic aminoglycoside antibiotic derivative, specifically a Cbz (carbobenzyloxy) protected form of kanamycin A. It is derived from the natural product kanamycin, which is an antibiotic obtained from the bacterium *Streptomyces kanamyceticus*. The modification involves the introduction of a protective Cbz group at the 6' position, which can improve solubility, stability, or enable further chemical modifications.</p>

<p>Camptothecin (CPT) belongs to the alkaloid group of natural products and is a specific DNA topoisomerase I (Topo I) inhibitor (IC50=679 nM) with specificity.</p>

<p>Rifamdin is an antibiotic, which is a chemical substance derived from the source compound rifampicin. Its mode of action involves the inhibition of bacterial DNA-dependent RNA polymerase, which effectively suppresses bacterial RNA synthesis, leading to cell death. This mechanism primarily targets Mycobacterium tuberculosis, the causative agent of tuberculosis.</p>

<p>Cefadroxil is a broad-spectrum bactericidal antibiotic that belongs to the cephalosporin family. It is a semi-synthetic penicillin and inhibits bacterial cell wall synthesis through binding to one or more of the penicillin-binding proteins (PBPs). Cefadroxil monohydrate is used as an antibiotic for culture media and has been proven to be effective against methicillin-resistant Staphylococcus aureus (MRSA). In addition, the drug has been shown to have no significant effect on blood tests or microscopic studies.</p>

<p>Decoyinine is an antibiotic compound, which is derived from the bacterium *Streptomyces hygroscopicus*. Its mode of action involves the inhibition of guanine nucleotide synthesis. By targeting the biosynthesis pathway of nucleotides, Decoyinine effectively impedes the growth and proliferation of bacterial cells.</p>

<p>Tridehydro pirlimycin is an antibiotic compound, which is a synthetic derivative with origins in the lincosamide family. It is characterized by its ability to inhibit bacterial protein synthesis by binding to the 50S ribosomal subunit, leading to a bacteriostatic effect. The compound is primarily developed for its use in veterinary medicine, particularly in the treatment and management of bacterial infections in animals.</p>

<p>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.</p>

<p>Cefteram is a third-generation cephalosporin antibiotic, which is synthesized through chemical processes starting from cephalosporin C, a compound derived from the fungus Acremonium. As a cephalosporin, it functions by inhibiting bacterial cell wall synthesis. This is achieved through the binding to penicillin-binding proteins (PBPs), which are critical in the formation of the bacterial cell wall. By disrupting this process, Cefteram leads to the lysis and death of the bacteria.</p>

<p>2'-O-Acetylspiramycin I is a semi-synthetic derivative of spiramycin, which is a macrolide antibiotic originally sourced from the bacterium *Streptomyces ambofaciens*. The modification involves the acetylation at the 2'-hydroxyl group of spiramycin, enhancing certain pharmacokinetic properties.</p>

<p>Nafcillin sodium is a beta-lactam antibiotic, which is a semisynthetic derivative of the organic compound penicillin. It is specifically engineered to be resistant to the inactivation by penicillinase enzymes produced by certain bacteria. This feature allows it to remain effective against a range of penicillinase-producing staphylococcal infections.</p>

<p>Mitomycin C analogue</p>

<p>Sarecycline is a tetracycline-class antibiotic, which is derived from naturally occurring tetracycline antibiotics. Its mode of action involves inhibition of bacterial protein synthesis by binding to the 30S ribosomal subunit, thereby preventing the addition of amino acids to nascent peptide chains. This specific mechanism disrupts bacterial growth, making Sarecycline effective against certain strains of bacteria implicated in dermatological conditions.</p>

<p>Cloxacillin benzathine is a beta-lactam antibiotic, which is synthesized from Penicillium fungi-derived penicillins. It acts by inhibiting bacterial cell wall synthesis. The mechanism involves the irreversible inhibition of penicillin-binding proteins (PBPs). This disruption in the bacterial cell wall structure ultimately leads to cell lysis and death.</p>

<p>Neomycin B is an aminoglycoside antibiotic, which is derived from the bacterium *Streptomyces fradiae*. It exerts its antibacterial effects by binding to the 30S subunit of bacterial ribosomes, leading to the inhibition of protein synthesis. This binding disrupts the translation process, thereby preventing the growth and proliferation of bacteria. Neomycin B is effective against a wide range of Gram-negative and some Gram-positive bacteria, making it a valuable tool in both medical and research settings.</p>

<p>Sulbenicillin is a semi-synthetic penicillin antibiotic, which is derived from 6-aminopenicillanic acid, a natural precursor in the biosynthesis of penicillins. With its beta-lactam structure, Sulbenicillin disrupts bacterial cell wall synthesis by inhibiting penicillin-binding proteins, which are essential enzymes in the cross-linking of peptidoglycan layers. This disruption compromises the structural integrity of the bacterial cell wall, resulting in cell lysis and death, particularly in Gram-negative bacteria.</p>

<p>Inhibitor of protein synthesis; lincosamide class</p>

<p>8-Fluoro erythromycin is a synthetic derivative of the macrolide antibiotic erythromycin. It is derived from the fermentation of *Streptomyces erythraeus*, a species known for producing erythromycin, which is chemically modified to include a fluorine atom at the eighth position. This modification enhances its pharmacokinetic properties, improving its stability and bioavailability compared to the parent compound.</p>

<p>Potassium clavulanate is a beta-lactamase inhibitor and an antibacterial agent. The presence of potassium clavulanate in culture media inhibits the activity of beta-lactamases, which are enzymes that confer resistance to penicillin and other beta-lactam antibiotics. It also has been shown to be active against bacterial infections such as tuberculosis, sepsis, and pneumonia, where it can inhibit the growth of bacteria by interfering with their ability to form cell walls.</p>

<p>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.</p>

<p>Lysostaphin, from Staphylococcus staphylolyticus is a zinc metalloenzyme with action on bacterial cell walls by cleaving polyglycine cross-links and is used for treating staphylococcal infections and in research applications.</p>

<p>25-O-Deacetyl rifabutin is an antibiotic derivative, which is sourced from the semi-synthetic modification of rifabutin, a compound originally derived from the fermentation of the bacterium Amycolatopsis mediterranei. This derivative works by inhibiting bacterial RNA synthesis. It achieves this by specifically targeting the DNA-dependent RNA polymerase enzyme, which is essential for bacterial transcription. The mechanism involves binding to the beta-subunit of the polymerase, thereby blocking the elongation of the RNA chain, which ultimately leads to the death of the bacterial cell.</p>

<p>Hypothemycin is a natural product that serves as a potent inhibitor of protein kinases. It is derived from the fungus Hypomyces subiculosus and belongs to the class of resorcylic acid lactones. Its mode of action involves binding covalently to the ATP-binding site of kinases, leading to the inhibition of their activity. This covalent modification is achieved through the formation of a Michael-type addition with a reactive ene-diene functionality within its structure. By targeting these critical enzymes, hypothemycin disrupts key signaling pathways that are essential for cell growth and proliferation.</p>

<p>Oxacillin sodium is a beta-lactam antibiotic with action on bacterial cell wall synthesis and is used for treating infections caused by penicillin-resistant Staphylococcus aureus.</p>

<p>Vancomycin CDP-1 is a degradation product of vancomycin with no direct therapeutic action but used in research for analytical method development and validation.</p>

<p>Ceftizoxime alapivoxil is a prodrug antibiotic, which is derived from ceftizoxime, a third-generation cephalosporin. This semi-synthetic source enables the compound to effectively combat a wide range of bacterial infections by improving oral bioavailability compared to its parent compound. Once administered, ceftizoxime alapivoxil is metabolized in the body to release ceftizoxime, which exerts its antibacterial activity by binding to penicillin-binding proteins (PBPs) on bacterial cell walls. This binding action inhibits the transpeptidation step critical for cell wall synthesis, leading to cell lysis and bacterial death.</p>

<p>Erythromycylamine is a semisynthetic antibiotic, which is derived from the parent compound erythromycin. This compound is sourced from the fermentation product of the bacterium *Saccharopolyspora erythraea*. Erythromycylamine acts by inhibiting bacterial protein synthesis, specifically targeting the 50S ribosomal subunit, which ultimately leads to the disruption of bacterial cell growth and replication.</p>

<p>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.</p>

<p>Oligomycin is a macrolide antibiotic, which is derived from species of the bacterium Streptomyces. It acts as a potent inhibitor of the mitochondrial ATP synthase complex, specifically targeting the F₀ portion of the enzyme. This interference results in the blockage of proton translocation across the mitochondrial membrane, thereby preventing ATP synthesis. Due to this mode of action, Oligomycin is primarily utilized in biochemical research to study cellular respiration and energy metabolism. It serves as a valuable tool in elucidating the mechanisms of oxidative phosphorylation and the role of ATP in various cellular processes. In addition, its application extends to investigations on mitochondrial dysfunctions and the screening of mitochondrial-targeted drugs.</p>

<p>(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.</p>

<p>Inhibitor of protein synthesis; aminoglycoside</p>

<p>N'-Desmethyl azithromycin is a semi-synthetic derivative antibiotic, which is derived from the chemical modification of azithromycin, a macrolide antibiotic sourced originally from the bacterium *Streptomyces erythreus*. It functions primarily by inhibiting bacterial protein synthesis, binding specifically to the 50S ribosomal subunit, which results in the prevention of transpeptidation and translocation processes during translation. This action effectively halts bacterial growth, rendering it bacteriostatic.</p>

<p>Polymyxin B nonapeptide hydrochloride is a potent antibiotic compound derived from the bacterium *Bacillus polymyxa*. As a cationic polypeptide, it exhibits its antibacterial activity by interacting with the lipopolysaccharides and phospholipids in the bacterial cell membrane, leading to increased permeability and ultimately causing cell lysis. The compound is specifically effective against a broad range of Gram-negative bacteria, making it crucial in studying antibiotic resistance mechanisms.</p>

<p>N-Demethyl rifampin is a metabolite of rifampin, which is a natural product derivative. Rifampin itself is a well-known antibiotic derived from the bacterium *Amycolatopsis rifamycinica*. N-Demethyl rifampin is formed through the metabolic process where rifampin undergoes demethylation. This transformation occurs primarily in the liver, mediated by the cytochrome P450 enzyme system.</p>

<p>Clindamycin 4-phosphate is a semi-synthetic antibiotic, which is a derivative of the natural antibiotic lincomycin. It is specifically synthesized from Streptomyces lincolnensis cultures. The mode of action of Clindamycin 4-phosphate involves inhibiting bacterial protein synthesis by binding to the 50S subunit of the bacterial ribosome, thus preventing peptide chain elongation and subsequent bacterial growth.</p>

<p>N-Desisobutyl-N-propyl rifabutin is a synthetic derivative of rifabutin, which is an antibiotic belonging to the rifamycin class. This compound is sourced from modifications of the parent molecule rifabutin, itself derived from the rifamycin family produced by the bacterium Amycolatopsis, traditionally used for its antimicrobial properties. The mode of action involves the inhibition of bacterial RNA polymerase, effectively preventing the transcription process necessary for bacterial replication and protein synthesis. This disruption of RNA synthesis provides potent antimicrobial activity.</p>

<p>Dihydrostreptomycin sesquisulfate is an aminoglycoside antibiotic, which is derived from the bacterium Streptomyces griseus. Its mode of action involves binding to the 30S subunit of the bacterial ribosome, leading to the disruption of protein synthesis. This binding interferes with the initiation complex formation, causing misreading of mRNA and ultimately inhibiting bacterial growth.</p>

<p>Mitomycin D is an antibiotic and chemotherapeutic agent known for its ability to inhibit DNA synthesis, making it a potent antitumor agent. It is derived from the bacterium *Streptomyces caespitosus*. Mitomycin D functions as a DNA crosslinking agent by alkylating the DNA strands, which interferes with DNA replication and transcription. This mechanism leads to the cessation of cellular division and ultimately induces apoptosis in rapidly dividing cells.</p>

<p>Cefoxitin EP impurity B is a chemical reference standard, which is derived from the synthesis and purification processes involved in producing Cefoxitin. As an impurity standard, its primary role is to serve as a benchmark for quality control in pharmaceutical formulations. The mode of action of Cefoxitin EP impurity B involves the structural analysis and quantification of impurity levels, ensuring that the primary pharmaceutical products meet necessary safety and efficacy criteria.</p>

<p>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.</p>

<p>Tetracycline hydrochloride is a broad-spectrum antibiotic and is an electron transfer agent. It has been shown to be effective against bacterial infections in humans and has been used in cultures for the prevention of bacterial contamination. As an electron transfer agent, it is used in electron microscopy to study the surface of biological cells. Tetracycline hydrochloride enters bacterial cells by diffusion and interacts with the cytoplasmic membrane, where it induces a redox reaction that leads to cell death. The efficacy of tetracycline hydrochloride in treating candida albicans (yeast) was studied using in-vitro activity and showed that carboxymethyl chitosan nanoparticles were able to enhance the treatment efficiency.</p>

<p>An aminoglycoside antibiotic.  Found applications in treatment of UTi's as it decreases the ability of bacteria to make protein.</p>

<p>Antibacterial agent with the ability to permeate bacterial membranes and cause cell death. Colistin is a cationic peptide also known as polymyxin E. Colistin is effective in multidrug resistant Gram-positive bacteria such as P. aeruginosa, A. baumannii and K. pneumoniae.</p>

<p>Kasugamycin is an aminoglycoside antibiotic, which is derived from the actinomycete Streptomyces kasugaensis. Its mode of action involves the inhibition of protein synthesis by interfering with the function of the 30S ribosomal subunit, ultimately preventing the growth and proliferation of sensitive organisms. In agricultural contexts, Kasugamycin is primarily utilized to control bacterial and fungal diseases in a variety of crops, including rice and fruit trees. It is particularly effective against Xanthomonas oryzae, which causes bacterial leaf blight in rice, and other pathogenic organisms detrimental to plant health. The application of Kasugamycin has been an important tool for integrated pest management programs focusing on sustainable agricultural practices. As a compound with a specific mode of activity, it helps to reduce the environmental impact typically associated with broader-spectrum antibiotics, while offering target-specific disease control. Its careful application supports the minimization of resistance development, ensuring continued efficacy in protecting crop yields.</p>

<p>7-epi-Clindamycin is a clindamycin derivative, which is a semisynthetic antibiotic derived from the bacterium *Streptomyces lincolnensis*. Its mode of action involves binding to the 50S subunit of the bacterial ribosome, thereby inhibiting protein synthesis. This results in the suppression of bacterial growth, making it effective against certain Gram-positive bacteria and anaerobic species.</p>

<p>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.</p>

<p>Peplomycin sulfate is an anticancer antibiotic, which is a derivative of the bleomycin family of glycopeptide antibiotics produced by the bacterium *Streptomyces verticillus*. This antibiotic operates through a mode of action that involves the induction of DNA strand breaks by forming a complex with iron and oxygen, leading to the generation of free radicals. These radicals cleave DNA strands, thereby inhibiting DNA synthesis and inducing apoptosis in cancerous cells.</p>

<p>Tigemonam is a synthetic beta-lactam antibiotic, which is derived from chemical synthesis processes. This compound operates by inhibiting bacterial cell wall synthesis, specifically targeting the penicillin-binding proteins (PBPs). The disruption of the cell wall synthesis ultimately leads to cell lysis and death of the bacteria, making it effective primarily against gram-negative bacterial infections.</p>

<p>Telavancin is a lipoglycopeptide antibiotic, which is a semi-synthetic derivative of vancomycin. Its source is derived through modifications of the glycopeptide antibiotic, specifically aimed to enhance antibacterial activity. Telavancin functions by inhibiting cell wall synthesis in Gram-positive bacteria, including methicillin-resistant Staphylococcus aureus (MRSA). It does this by binding to the D-alanyl-D-alanine terminus of cell wall precursors, disrupting peptidoglycan polymerization and, consequently, cell wall integrity. Additionally, Telavancin increases membrane permeability and disrupts membrane potential, further enhancing its bactericidal activity.</p>

<p>1,3''-Di-HABA kanamycin A is a chemically modified antibiotic derivative. It is derived from kanamycin A, a well-known aminoglycoside antibiotic that is originally sourced from the bacterium *Streptomyces kanamyceticus*. The modification with 1,3''-Di-HABA alters its pharmacodynamic properties, potentially influencing its specificity and interaction with biological targets.</p>

<p>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.</p>

<p>Iclaprim is an antibiotic, which is a synthetic diaminopyrimidine antimicrobial agent with a specific mechanism of action. It works by selectively inhibiting bacterial dihydrofolate reductase, a crucial enzyme in the bacterial folate synthesis pathway. This inhibition prevents the production of tetrahydrofolate, ultimately disrupting DNA, RNA, and protein synthesis in susceptible bacterial cells.</p>

<p>Erythromycin B is a semisynthetic macrolide antibiotic, which is derived from the actinomycete *Saccharopolyspora erythraea*. Its mode of action involves inhibiting bacterial protein synthesis by binding to the 50S ribosomal subunit. This interference with protein synthesis effectively hampers bacterial growth, making it a potent bacteriostatic agent.</p>

<p>Lincomycin 2-palmitate hydrochloride is a semi-synthetic antibiotic, derived from the natural antibiotic lincomycin through chemical modification. It is sourced from fermentative processes involving the bacterium *Streptomyces lincolnensis*. The compound exerts its action by inhibiting protein synthesis in susceptible bacteria. This occurs through its binding to the 50S subunit of the bacterial ribosome, thereby hindering peptide chain elongation and ultimately arresting bacterial growth.</p>

<p>Cefotaxime sodium - Sterile grade is a cephalosporin antibiotic, which is derived from the beta-lactam class of antibacterial agents. It effectively disrupts bacterial cell wall synthesis by binding to and inhibiting penicillin-binding proteins, leading to cell lysis and death. This mechanism of action is potent against a variety of Gram-positive and Gram-negative bacteria, making it a valuable tool in clinical settings.</p>

<p>Vincristine, a microtubule disruptor, inhibits mitosis in cancer cells, useful in leukemia research.</p>

<p>Chaetoglobosin A is a mycotoxin, which is a secondary metabolite produced by the fungus Chaetomium globosum. This compound exhibits its mode of action by disrupting the cytoskeletal elements within cells, primarily affecting actin polymerization. This interference leads to alterations in cell morphology and can induce apoptosis in certain cell lines.</p>

<p>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.</p>

<p>Cefacetrile sodium is a broad-spectrum antibiotic belonging to the cephalosporin class. It is a semi-synthetic derivative sourced from cephalosporin C, a naturally occurring compound derived from the Acremonium fungus. Its mode of action involves the inhibition of bacterial cell wall synthesis. This occurs by binding to penicillin-binding proteins within the bacterial cell membrane, ultimately leading to cell lysis and death due to the inability to synthesize peptidoglycan, a critical component of the bacterial cell wall.</p>

<p>Geneticin is very efficient against gram-negative bacteria, however it is not applied for treating infections due to high renal toxicity. Geneticin and its resistance genes found application in the selection of transgenic cell lines including yeasts such as P. pastoris and S. serevisiae, other eukaryotic cell lines such as CHO or HEK293, but also plant cells and bacterial cells.</p>

<p>Clindamycin-d3 hydrochloride is an isotopically labeled pharmaceutical compound, specifically designed for use in the field of analytical chemistry and pharmacokinetics. It is derived from clindamycin, a known antibiotic sourced from modifications of the naturally occurring compound lincomycin, produced by the actinobacterium Streptomyces lincolnensis. The incorporation of deuterium atoms, replacing hydrogen, allows for its use in sophisticated analytical methods such as mass spectrometry, where it serves to trace the metabolic pathways and to quantify the bioavailability and distribution of clindamycin in biological systems with high precision.</p>

<p>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.</p>

<p>Ceftaroline fosamil is an advanced antibiotic, which is a cephalosporin derived from synthetic sources with a broad spectrum of activity. It is a prodrug that, once metabolized, becomes active in the body, binding to penicillin-binding proteins (PBPs) of bacteria. This binding inhibits the proteins responsible for cell wall synthesis, leading to bacterial cell lysis and death.</p>

<p>Erythromycin derivative</p>

<p>Gentamicin C2 pentaacetate (2 : 1 Mixture of C2 and C2a) is an aminoglycoside class antibiotic derivative, primarily derived from the fermentation of Micromonospora species. This product is a semi-synthetic compound, combining two closely related gentamicin components, C2 and C2a, in a specified ratio. Its mode of action involves binding to the 30S subunit of the bacterial ribosome, which disrupts protein synthesis resulting in bactericidal activity against a wide spectrum of Gram-negative and some Gram-positive bacteria.</p>