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Nojirimycin
Nojirimycin is the parent compound of a class of antibiotics and glycosidase enzyme inhibitor, inhibitors. Nojirimycin and its derivatives are mainly obtained from a class of ''Streptomyces'' species. Chemically, it is an iminosugar. Derivatives * 1-deoxynojirimycin or duvoglustat * 1-deoxygalactonojirimycin or migalastat, a drug for the treatment of Fabry disease References Antibiotics Streptomyces Iminosugars {{Antibiotic-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1-deoxynojirimycin
1-Deoxynojirimycin (DNJ or 1-DNJ), also called duvoglustat or moranolin, is an alpha-glucosidase inhibitor, most commonly found in mulberry leaves. Although it can be obtained in small quantities by brewing an herbal tea from mulberry leaves, interest in commercial production has led to research on developing mulberry tea higher in DNJ, and on alternate routes of production, such as via ''Bacillus ''Bacillus'' (Latin "stick") is a genus of Gram-positive, rod-shaped bacteria, a member of the phylum '' Bacillota'', with 266 named species. The term is also used to describe the shape (rod) of other so-shaped bacteria; and the plural ''Bacill ...'' species. Biosynthesis 1-Deoxynojirimycin is a polyhydroxylated piperidine alkaloid produced from D-Glucose in various plants, such as ''Commelina communis'', and in the ''Streptomyces'' and ''Bacillus'' bacteria. High quantities of this azasugar are produced in ''Bacillus subtilis'', a process initiated by a TYB gene cluster composed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antibiotic
An antibiotic is a type of antimicrobial substance active against bacteria. It is the most important type of antibacterial agent for fighting bacterial infections, and antibiotic medications are widely used in the treatment and prevention of such infections. They may either kill or inhibit the growth of bacteria. A limited number of antibiotics also possess antiprotozoal activity. Antibiotics are not effective against viruses such as the common cold or influenza; drugs which inhibit viruses are termed antiviral drugs or antivirals rather than antibiotics. Sometimes, the term ''antibiotic''—literally "opposing life", from the Greek roots ἀντι ''anti'', "against" and βίος ''bios'', "life"—is broadly used to refer to any substance used against microbes, but in the usual medical usage, antibiotics (such as penicillin) are those produced naturally (by one microorganism fighting another), whereas non-antibiotic antibacterials (such as sulfonamides and antise ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glycosidase
Glycoside hydrolases (also called glycosidases or glycosyl hydrolases) catalyze the hydrolysis of glycosidic bonds in complex sugars. They are extremely common enzymes with roles in nature including degradation of biomass such as cellulose (cellulase), hemicellulose, and starch (amylase), in anti-bacterial defense strategies (e.g., lysozyme), in pathogenesis mechanisms (e.g., viral neuraminidases) and in normal cellular function (e.g., trimming mannosidases involved in N-linked glycoprotein biosynthesis). Together with glycosyltransferases, glycosidases form the major catalytic machinery for the synthesis and breakage of glycosidic bonds. Occurrence and importance Glycoside hydrolases are found in essentially all domains of life. In prokaryotes, they are found both as intracellular and extracellular enzymes that are largely involved in nutrient acquisition. One of the important occurrences of glycoside hydrolases in bacteria is the enzyme beta-galactosidase (LacZ), wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enzyme Inhibitor
An enzyme inhibitor is a molecule that binds to an enzyme and blocks its activity. Enzymes are proteins that speed up chemical reactions necessary for life, in which substrate molecules are converted into products. An enzyme facilitates a specific chemical reaction by binding the substrate to its active site, a specialized area on the enzyme that accelerates the most difficult step of the reaction. An enzyme inhibitor stops ("inhibits") this process, either by binding to the enzyme's active site (thus preventing the substrate itself from binding) or by binding to another site on the enzyme such that the enzyme's catalysis of the reaction is blocked. Enzyme inhibitors may bind reversibly or irreversibly. Irreversible inhibitors form a chemical bond with the enzyme such that the enzyme is inhibited until the chemical bond is broken. By contrast, reversible inhibitors bind non-covalently and may spontaneously leave the enzyme, allowing the enzyme to resume its function. Reve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Streptomyces
''Streptomyces'' is the largest genus of Actinomycetota and the type genus of the family Streptomycetaceae. Over 500 species of ''Streptomyces'' bacteria have been described. As with the other Actinomycetota, streptomycetes are gram-positive, and have genomes with high GC content. Found predominantly in soil and decaying vegetation, most streptomycetes produce spores, and are noted for their distinct "earthy" odor that results from production of a volatile metabolite, geosmin. Streptomycetes are characterised by a complex secondary metabolism. They produce over two-thirds of the clinically useful antibiotics of natural origin (e.g., neomycin, streptomycin, cypemycin, grisemycin, bottromycins and chloramphenicol). The antibiotic streptomycin takes its name directly from ''Streptomyces''. Streptomycetes are infrequent pathogens, though infections in humans, such as mycetoma, can be caused by '' S. somaliensis'' and '' S. sudanensis'', and in plants can be caused by ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iminosugar
An iminosugar, also known as an iminosaccharide, is any analog of a sugar where a nitrogen atom has replaced the oxygen atom in the ring of the structure. Iminosugars are common components of plants and may be responsible for some of their medicinal properties. The first iminosugar to be isolated from a natural source, 1-deoxynojirimycin (DNJ), found in Mulberry, was reported in 1976, but few others were discovered until many years later. In terms of biochemical activity for medicinal applications, DNJ and 1,4-dideoxy-1,4-imino-D-arabinitol (DAB, another early example of this class of compounds) are alpha-glucosidase inhibitors and were shown to have anti-diabetic and anti-viral activity. DNJ was modified to produce two derivatives now used as medicines, ''N''-hydroxyethyl-DNJ ( miglitol) for diabetes and ''N''-butyl-DNJ ( miglustat) for Gaucher's disease. Anti-cancer and anti-viral activity was subsequently observed for swainsonine—a mannose analogue—and castanospermine—a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1-deoxygalactonojirimycin
Migalastat, sold under the brand name Galafold, is a medication for the treatment of Fabry disease, a rare genetic disorder. It was developed by Amicus Therapeutics. The US Food and Drug Administration (FDA) granted it orphan drug status in 2004, and the European Commission followed in 2006. The European Medicines Agency's Committee for Medicinal Products for Human Use (CHMP) granted the drug a marketing approval under the name Galafold in May 2016. The U.S. Food and Drug Administration (FDA) considers it to be a first-in-class medication. Medical uses Migalastat is used for the long-term treatment of Fabry disease in adults and adolescents aged 16 or older with an amenable mutation of the enzyme alpha-galactosidase A (α-GalA). An "amenable" mutation is one that leads to misfolding of the enzyme, but otherwise would not significantly impair its function. Based on an ''in vitro'' test, Amicus Therapeutics has published a list of 269 amenable and nearly 600 non-amenable mutations ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antibiotics
An antibiotic is a type of antimicrobial substance active against bacteria. It is the most important type of antibacterial agent for fighting bacterial infections, and antibiotic medications are widely used in the treatment and prevention of such infections. They may either kill or inhibit the growth of bacteria. A limited number of antibiotics also possess antiprotozoal activity. Antibiotics are not effective against viruses such as the common cold or influenza; drugs which inhibit viruses are termed antiviral drugs or antivirals rather than antibiotics. Sometimes, the term ''antibiotic''—literally "opposing life", from the Greek roots ἀντι ''anti'', "against" and βίος ''bios'', "life"—is broadly used to refer to any substance used against microbes, but in the usual medical usage, antibiotics (such as penicillin) are those produced naturally (by one microorganism fighting another), whereas non-antibiotic antibacterials (such as sulfonamides and antisep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
