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Nonribosomal peptides (NRP) are a class of peptide secondary metabolites, usually produced by microorganisms like bacteria and fungi. Nonribosomal peptides are also found in higher organisms, such as nudibranchs , but are thought to be made by bacteria inside these organisms. [ 1 ]
[17] [18] Despite its positive effects on humans, morphine has very strong adverse effects, such as addiction, hormone imbalance or constipation. [ 18 ] [ 19 ] Due to its highly addictive nature morphine is a strictly controlled substance around the world, used only in very severe cases with some countries underusing it compared to the global ...
Glycopeptide antibiotics are a class of drugs of microbial origin that are composed of glycosylated cyclic or polycyclic nonribosomal peptides.Significant glycopeptide antibiotics include the anti-infective antibiotics vancomycin, teicoplanin, telavancin, ramoplanin, avoparcin and decaplanin, corbomycin, complestatin and the antitumor antibiotic bleomycin.
The polymyxins are produced by nonribosomal peptide synthetase systems in Gram-positive bacteria such as Paenibacillus polymyxa. Like other NRPs, polymyxins are assembled by synthetases with multiple modules, each containing a set of enzyme domains that sequentially operate on the growing chain by adding the next residue and extending the chain ...
Microcystins are small nonribosomal peptides.In Microcystis aeruginosa microcystin-LR is synthesized by proteins that encoded by a 55 kb microcystin-gene cluster (mcy) that contains 6 large (over 3 kb) genes that encode proteins with polyketide synthase activity, nonribosomal peptide synthase activity (mcyA-E and G) and 4 smaller genes (mcyF and H-J).
The teenagers openly talked about their crimes, and their robbery reportedly became such a well-known rumor that police came to Jackson to ask if she’d like to press charges.