CINNAMYCIN Chemische Eigenschaften,Einsatz,Produktion Methoden
S-S?tze Betriebsanweisung:
S22:Staub nicht einatmen.
S24/25:Berührung mit den Augen und der Haut vermeiden.
Verwenden
Cinnamycin (lanthiopeptin) is a high molecular weight tricyclic antibiotic produced by several species of Streptoverticillium. Cinnamycin is a potent indirect inhibitor of phospholipase A2, acting by specifically sequestering phosphatidylethanolamine (PE), a major component of the mammalian plasma cell membrane. Cinnamycin induces trans-bilayer phospholipid movement in cell membranes to expose internally bound PE. At high surface concentrations of PE, cinnamycin induces membrane re-organisation including membrane fusion and alteration of gross morphology.
Biosynthese
Ay?e ?kesli and colleagues investigated the biosynthetic machinery using both in vitro studies and heterologous expression in Escherichia coli. CinX is an α-ketoglutarate/iron(II)-dependent hydroxylase that carries out the hydroxylation of aspartate 15 of the precursor peptide CinA. In addition, CinM catalyzes dehydration of four Ser and Thr residues and subsequent cyclization of Cys residues to form the three (Me)Lan bridges.
Allgemeine Beschreibung
Cinnamycin is synthesized after proteolytic cleavage from core peptide and takes up a compact globular structure.
Biochem/physiol Actions
Cinnamycin is a tetracyclic polypeptide antibiotic containing 19 amino acids. The polypeptide has the unusual amino acids threo-3-methyl-lanthionine, meso-lanthionine, lysinoalanine and 3-hydroxyaspartic acid. It is produced by Streptomyces cinnamoneus and belongs to the duramycin-type l antibiotics. Lantibiotics are synthesized in the ribosome and undergo extensive post-translational modifications to attain their active antimicrobial form. The unique receptor for Cinnamycin, phosphatidylethanolamine (PE), is located on the inner leaflet of the plasma membrane. Cinnamycin induces transbilayer lipid movement leading to the exposure of PE to the outer leaflet of the plasma membrane. The interaction of Cinnamycin with PE provides a tool for PE monitoring. Cinnamycin is active against Gram-positive rods such as Bacilli, Clostyridium and Mycobacterium, causing cell wall biosynthesis stress.Cinnamycin, like other lantibiotics, was also reported to inhibit phospholipase A2 (PLA2). It was suggested as an alternative treatment for atherosclerosis through its ability to inhibit PLA2 by binding to its substrate PE. Moreover, Cinnamycin was found to inhibit Herpes simplex virus (HSV-1) activity.
CINNAMYCIN Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
