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Nourseothricin : ウィキペディア英語版 | Nourseothricin
Nourseothricin (NTC) is a member of the streptothricin-class of aminoglycoside antibiotics produced by ''Streptomyces'' species. Chemically, NTC is a mixture of the related compounds streptothricin C, D, E, and F.〔(Nourseothricin )〕 NTC inhibits protein synthesis by inducing miscoding. It is used as a selection marker for a wide range of organisms including bacteria, yeast, filamentous fungi, and plant cells. It is not known to have adverse side-effects on positively selected cells, a property cardinal to a selection drug. NTC can be inactivated by nourseothricin N-acetyl transferase (NAT) from ''Streptomyces noursei'', an enzyme that acetylates the beta-amino group of the beta-lysine residue of NTC. NAT can thus act as an antibiotic resistance gene. == Properties == NTC is highly soluble in water (~ 1 g/L) and stable in solution for 2 years at 4 °C.〔(NTC properties ), (Jena Bioscience )〕
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