Demeclocycline

**Semantic type:** Antibiotic|Pharmacologic Substance

**Definition:** A semi-synthetic, broad-spectrum naphthacene antibiotic produced by the bacterium Streptomyces aureofaciens. Demeclocycline binds to bacterial 30S ribosomal subunit and prevents binding of aminoacyl-tRNA to the mRNA-ribosome complex, thereby inhibiting protein synthesis. Demeclocycline also inhibits the effect of vasopressin on the renal tubules, thereby causing diuresis.

**Synonyms:** - 7-Chloro-4-(dimethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,6,10,12,12a-pentahydroxy-1,11-dioxo-2-naphthacenecarboxamide - DEMECLOCYCLINE