Antimicrobials

<p>Penicillin G potassium is a natural penicillin antibiotic with action on bacterial cell wall synthesis and is used for treating severe bacterial infections like meningitis, syphilis, and endocarditis.</p>

<p>Herbicidin B is a natural herbicidal compound, which is a secondary metabolite produced through the fermentation of certain Streptomyces species. This compound functions as a potent inhibitor of plant growth by interfering with essential physiological processes within the plant cells. The mode of action of Herbicidin B primarily involves disruption of metabolic pathways that are critical for the development and survival of plants, leading to effective control of undesired vegetation.</p>

<p>Penciclovir is an antiviral agent and acyclic guanine derivative that has proven efficient in the treatment of Herpes Simplex type 1 and 2 (HSV1 and HSV2) infection. Penciclovir is transformed by the virus into an active derivative able to block the deoxyguanosine triphosphate substrate binding site of the HSV polymerase.</p>

<p>HIV-1 Integrase Inhibitor is an antiretroviral compound with a mode of action that blocks the viral enzyme integrase, preventing the integration of viral DNA into the host genome. It is used for the treatment of HIV infection.</p>

<p>Anti-viral; HIV-1 protease inhibitor</p>

<p>Neomycin, one of the many oligosaccharide containing antibiotics, is an aminoglycoside antibiotic found in Streptomyces fradiae (Collins, 2006) with wide spectrum, active against Gram-negative Gram-positive bacteria. Neomycin is commony used as a selection marker in cloning, and is therefore used in growth media to select colonies with the neomycin resistance cassette integrated into their genome. Neomycin is a mixture of neomycin B (Framycetin) and its epimer Neomycin C, the latter component accounting for some 5–15% of the mixture.</p>

<p>2-Methyl-4-isothiazolin-3-one or MIT is a powerful antimicrobial and antifungal agent which is widely used in personal care products. It is also used in industrial applications as a preservative and antifouling agent.</p>

<p>Nucleoside analog with antiviral activity against coronaviruses, hepatitis and influenzas viruses. EIDD 1931 inhibited the Middle East Respiratory Syndrome coronavirus (MERS-CoV) and the murine hepatitis virus (MHV) replication in vitro at submicromolar concentrations. EIDD 1931 is able to evade the proofreading exonuclease ExoN and presents with high barrier to development of drug resistance.</p>

<p>Inhibitor of cell-wall synthesis; carbapenem class</p>

<p>Ribostamycin sulphate is an aminoglycoside antibiotic with action on bacterial protein synthesis by binding to the 30S ribosomal subunit and is used for treating bacterial infections like sepsis and pneumonia.</p>

<p>Herbicidin K is a naturally derived herbicide, known for its biological origin from microbial fermentation processes. It is primarily sourced from certain strains of Streptomyces, a genus of Gram-positive bacteria notable for their diverse secondary metabolites. The mode of action of Herbicidin K involves the inhibition of key enzymatic pathways within target plants, leading to the disruption of cellular functions and ultimately plant death. This selectivity is particularly effective against broadleaf weeds, providing a targeted approach to weed management.</p>

<p>Polymyxin B is a sulfonamide antibiotic with broad spectrum of activity against Gram-negative bacteria. It binds to the bacterial membrane, causing an increase in the cell’s permeability and thus leading to cell death. A study on human neutrophils showed that polymyxin B reduces the expression of neomycin sulfate through inhibition of protein synthesis, which leads to cell death by lysosomal enzyme release. This antibiotic has been shown to be effective on clostridium perfringens, where it inhibits bacterial growth and leads to hypersensitivity reactions in some patients.</p>

<p>Ridinilazole is a narrow-spectrum antibiotic with action on bacterial cell division inhibition and is used for treating Clostridioides difficile infections.</p>

<p>Telavancin HCl is a lipoglycopeptide antibiotic with action on bacterial cell wall synthesis and membrane integrity and is used for treating complicated skin infections and hospital-acquired pneumonia caused by gram-positive bacteria.</p>

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

<p>Benethamine penicillin is a beta-lactam antibiotic, which is a semi-synthetic derivative of penicillin. It is sourced from the modification of naturally occurring penicillin compounds, typically produced through the fermentation of Penicillium mold cultures. Benethamine penicillin operates by inhibiting bacterial cell wall synthesis. It targets the penicillin-binding proteins within bacterial cell membranes, disrupting peptidoglycan cross-linking, which is essential for cell wall structural integrity. This leads to cell lysis and death in susceptible bacteria.</p>

<p>5-(3,4,5-Trimethoxybenzyl)pyrimidine-2,4-diamine 2-hydroxypropanoate is an antibacterial compound with a broad spectrum of activity against Gram-positive and Gram-negative bacteria. It is active against strains resistant to other antibiotics, such as, tetracycline and penicillin. 5-(3,4,5-Trimethoxybenzyl)pyrimidine-2,4-diamine 2-hydroxypropanoate has been shown to be effective in vitro against Campylobacter jejuni - the most common cause of bacterial gastroenteritis in humans. The compound also inhibits the growth cycle of Campylobacter jejuni by arresting the cells at the G1 phase. The molecule has been shown to inhibit DNA synthesis in E. coli and S. typhimurium with IC50 values of 1 ÎŒM and 0.8 ÎŒM respectively. This molecule has been tested for its surface active properties and it can be used as an additive in personal care products for improved wetting and spreading on surfaces. The compound is also researched for its antifungal efficacy against Candida albicans by inhibiting the growth cycle of the fungus.</p>

<p>Orbifloxacin is a fluoroquinolone antibiotic with action on bacterial DNA gyrase and topoisomerase IV and is used for treating bacterial infections in veterinary medicine.</p>

<p>Avibactam free acid is a β-lactamase inhibitor and is used for the treatment of bacterial infections in combination with β-lactam antibiotics. It inactivates β-lactamases by a covalent and reversible mechanism</p>

<p>Membrane-disrupting agent</p>

<p>Versalide is a synthetic musk compound with action as a fragrance ingredient and is used for adding scent to perfumes and personal care products.</p>

<p>Tenofovir is a nucleoside reverse transcriptase inhibitor (NRTI) with action on viral reverse transcriptase to block replication and is used for treating HIV/AIDS and chronic hepatitis B.</p>

<p>Emtricitabine is an antiviral drug that is used to treat chronic viral hepatitis, which is caused by the hepatitis B and C viruses. The drug blocks the activity of reverse transcriptase, which is an enzyme necessary for the replication of viral RNA in the body. Emtricitabine has been shown to be effective against acute hepatitis B virus infection and chronic hepatitis B virus infection with or without cirrhosis. It also has been shown to be effective against chronic hepatitis C virus infection with or without cirrhosis.</p>

<p>Erythromycin stearate is a macrolide antibiotic with action on bacterial protein synthesis inhibition and is used for treating respiratory tract infections, skin infections, and sexually transmitted infections.</p>

<p>Chlorotetracycline monohydrochloride is an antibiotic designed for culture media use. It is derived from the bacterium *Streptomyces aureofaciens*, and functions primarily by inhibiting bacterial protein synthesis. This action prevents the attachment of aminoacyl-tRNA to the ribosomal acceptor site, effectively halting the growth of bacteria by disrupting protein production, which is essential for their survival and replication.</p>

<p>Cytarabine is also known as cytosine arabinoside (ara-C) and is a chemotherapy drug that works by inhibiting DNA synthesis. It acts as a nucleoside analogue, which is incorporated into the growing DNA chain during replication. Cytarabine combines a cytosine base with an arabinose sugar (1β-arabinofuranosylcytosine) and is an analog for human deoxycytosine. Cytarabine interferes with DNA synthesis as it is rapidly converted to cytosine arabinoside triphosphate, damaging DNA when cells are in the synthesis phase (S phase). Tumor cells which are highly mitotic and growing rapidly are therefore preferably targeted. Cytarabine also inhibits nucleotide reductase enzymes as well as nuclear polymerases, leading to interruption and inhibition of synthesis, strand breaks and cell death.</p>

<p>HIV-1 integrase inhibitor; inhibits DNA strand transfer</p>

<p>Cephalothin sodium is a first-generation cephalosporin antibiotic with action on bacterial cell wall synthesis and is used for treating bacterial infections such as respiratory tract infections and skin infections.</p>

<p>Griselimycin is an antibiotic, which is derived from the bacterial genus *Streptomyces*. This compound exhibits its mode of action by targeting bacterial protein synthesis, specifically binding to the DNA polymerase sliding clamp, thereby inhibiting replication and cell division in a range of bacterial pathogens. Griselimycin has been the focus of renewed scientific interest due to its potent activity against Mycobacterium tuberculosis, including multi-drug-resistant strains. The compound’s unique mode of action makes it a promising candidate for further development in the treatment of tuberculosis and potentially other bacterial infections that have developed resistance to more commonly used antibiotics. Advances in understanding its biosynthesis have facilitated semi-synthetic modifications, potentially enhancing its pharmacokinetic properties and antimicrobial spectrum. The applications of Griselimycin extend to research contexts where understanding resistance mechanisms and novel antibiotic development are critical. Continued exploration of this compound may contribute significantly to addressing the global challenge of antibiotic resistance.</p>

<p>Fluoroquinolone; gyrase inhibitor</p>

<p>STAADIUMTM GlucuroniZide is a targeted inhibitor of glucuronidase-producing bacteria, which is activated by E. coli-specific glucuronidase enzyme. Glucuronidases are enzymes catalyzing the cleavage of complex carbohydrates and E. coli is a well-known producer. In complex cultures, E. coli strains often outcompete bacteria that present at lower titre and STAADIUMTM GlucuroniZide can help to selectively reduce the growth of E. coli. STAADIUMTM GlucuroniZide can be used in microbiome studies, food control, environmental safety, hygiene, and clinical diagnostics. More details can be found in the application notes document.</p>

<p>Rupintrivir is a peptidomimetic antiviral with action on rhinovirus 3C protease to inhibit viral replication and is used for research on rhinovirus and other viral infections.</p>

<p>Florfenicol is a broad-spectrum antibiotic used for the treatment of various bacteria infections. This drug is used in veterinary medicine and to treat animals with those infections. This drug works by inhibiting bacteria synthesis. It is a fluorinated synthetic analog of thiamphenicol.</p>

<p>4'-Epidaunorubicin hydrochloride is an anthracycline antibiotic derivative, which is synthesized from modifications of natural products. It functions as a topoisomerase II inhibitor, which intercalates into DNA strands and disrupts replication and transcription, thereby inhibiting cancer cell proliferation. This compound is primarily utilized in the field of oncology for its potent anti-tumor activities. By forming stable complexes with DNA and topoisomerase II, 4'-Epidaunorubicin hydrochloride induces breaks in the DNA strands, leading to apoptosis of cancer cells. It is often used in treatment protocols for various malignancies, including leukemia and solid tumors. While highly effective, its administration is carefully managed to mitigate potential cardiotoxicity, a common attribute of anthracycline drugs. Research continues to explore its full potential and optimize delivery methods to enhance its therapeutic index.</p>

<p>α-Apo-oxytetracycline is a degradation product of oxytetracycline with action on bacterial protein synthesis inhibition and is used for research on antibiotic activity and bacterial resistance.</p>

<p>Gatifloxacin is an antibiotic, which is a synthetic fluoroquinolone with broad-spectrum antibacterial activity. Its source lies in its chemical synthesis, designed to inhibit bacterial enzymes necessary for DNA replication. The mode of action involves the inhibition of bacterial DNA gyrase and topoisomerase IV, which are critical enzymes for bacterial DNA replication, transcription, and repair. This dual inhibitory mechanism disrupts bacterial cell division and growth, leading to the eventual eradication of susceptible bacterial strains.</p>

<p>Antibiotic; anti-protozoal; anti-helmintic; protein synthesis inhibitor</p>

<p>Inhibitor of inosine monophosphate dehydrogenase; immunosuppressant</p>

<p>Herbicidin E is a potent herbicidal compound, derived from blue-green algae, with a biochemical mode of action focused on inhibiting photosynthetic electron transport. It effectively disrupts the photosynthetic process by binding to specific sites within the chloroplasts of target plants, impairing their ability to convert light energy into chemical energy. This leads to a depletion of essential energy reserves, resulting in the controlled demise of the plant.</p>

<p>(S)-6,7-Dihydro-2-nitro-6-[[4-(trifluoromethoxy)phenyl]methoxy]-5H-imidazo[2,1-b][1,3]oxazine ia slo known as PA-824. An anti-tuberculosis drug that affects both replicating and non-replicating Mycobacterium tuberculosis via cell wall inhibition and respiratory poisoning..</p>

<p>Azithromycin N-oxide is a macrolide antibiotic derivative and is used for research purposes. Its mode of action is similar to azithromycin.</p>

<p>Meropenem trihydrate has broad spectrum activity against Gram-positive and Gram-negative bacteria, as well as, some mycoplasma species. It inhibits cell wall synthesis by binding to bacterial penicillin-binding proteins (PBP), which impairs cell wall integrity, induces the formation of reactive oxygen species, and inhibits macromolecular synthesis in bacteria. It can be used to prevent bacterial growth after being exposed to meropenem through fluorescence imaging of human blood plasma. Meropenem trihydrate research studies showed a reduction of the allergen levels in patients with respiratory allergies or asthma, specifically dust mites, cockroaches, animal dander, pollen grains, etc. by inhibit allergen-induced sensitization of mast cells.</p>

<p>Omadacycline tosylate is a aminomethylcycline antibiotic with action on bacterial protein synthesis inhibition and is used for treating community-acquired bacterial pneumonia and skin infections.</p>

<p>Gentamycin sulphate is the salt form of the broad-spectrum antibiotic gentamycin (a.k.a. gentamicin). Gentamycin is active against clinically relevant bacteria, such as: Pseudomonas aeruginosa, Klebsiella pneumoniae, Escherichia coli, Serratia marcescens, and is used to fight infections from Staphylococcus, Citrobacter and Enterobacteriaceae species. Gentamycin is a natural mixture of four congeners, one of which is gentamicin C2a. Gentamycin has been included in biomedical implantable materials, such as, bone grafts, to reduce the risk of infection.</p>

<p>STAADIUM™ GlucuroniZide is a targeted inhibitor of glucuronidase-producing bacteria, which is activated by E. coli-specific glucuronidase enzyme. Glucuronidases are enzymes catalysing the cleavage of complex carbohydrates and E. coli is a well-known producer. In complex cultures, E. coli strains often outcompete bacteria that present at lower titre and STAADIUM™ GlucuroniZide can help to selectively reduce the growth of E. coli. STAADIUM™ GlucuroniZide can be used in microbiome studies, food control, environmental safety, hygiene, and clinical diagnostics. More details can be found in the application notes document.</p>

<p>Paromomycin sulfate is an aminoglycoside antibiotic with action on bacterial protein synthesis inhibition and is used for treating intestinal infections and leishmaniasis.</p>

<p>Meayamycin B is a synthetic macrolide, a complex organic compound, which is derived from the natural product FR901464. This compound functions as an antagonist of the spliceosome, the cellular machinery responsible for pre-mRNA splicing. By binding to specific components of the spliceosome, Meayamycin B disrupts the splicing process, leading to the accumulation of unspliced precursor mRNA. This action effectively induces apoptosis in cancer cells, making it a notable candidate for cancer therapy research.</p>

<p>Ethambutol is an antimicrobial compound, specifically an antitubercular agent, which is a synthetic derivative of ethylenediamine. It is classified as a bacteriostatic agent that primarily targets Mycobacterium tuberculosis. The mode of action of Ethambutol involves the inhibition of arabinosyl transferases, enzymes essential for the polymerization of arabinogalactan, a critical component of the mycobacterial cell wall. By disrupting cell wall biosynthesis, Ethambutol effectively hampers the growth and proliferation of the bacteria.</p>

<p>A competitive inhibitor of HCV NS3/4A protease that blocks viral replication. Efficacious in treating HCV-infected patients in combination with daclatasvir. Asunaprevir-resistant replicons are sensitive to NS5A replication complex inhibitor, suggesting potential combination therapy.</p>

<p>Bacteriostatic; for treating multi-drug-resistant tuberculosis</p>