Antibiotic produced by Streptomyces mediterranei that acts by inhibiting prokaryotic, but not eukaryotic DNA-dependent RNA synthesis. Blocks initiation, but not elongation of transcripts.

Dictionary of molecular biology. 2004.

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  • Rifamycin — The rifamycins are a group of antibiotics which are synthesized either naturally by the bacterium Amycolatopsis mediterranei , or artificially. They are a subclass of the larger family, Ansamycin. Rifamycins are particularly effective against… …   Wikipedia

  • Rifamycin — Rifamycine bezeichnet eine Gruppe von Antibiotika, die von Bakterien aus der Familie der Actinomyceten erzeugt werden, vor allem von der Gattung Amycolatopsis. Sie können aber auch synthetisch hergestellt werden. Rifamycine wirken gegen… …   Deutsch Wikipedia

  • rifamycin — rif·a·my·cin (rĭf ə mīʹsĭn) n. Any of a group of antibiotics originally isolated from a strain of the soil microorganism Streptomyces mediterranei, used in the treatment of leprosy, tuberculosis, and other bacterial diseases.   [Alteration of… …   Universalium

  • rifamycin — noun Any of a group of antibiotics, a subclass of the ansamycins, which are synthesized either naturally by the bacterium Amycolatopsis mediterranei or artificially …   Wiktionary

  • rifamycin — rif·a·my·cin .rif ə mīs ən n any of several antibiotics that are derived from a bacterium of the genus Streptomyces (S. mediterranei) * * * rif·a·my·cin (rif″ə miґsin) any of a family of antibiotics biosynthesized by a strain of… …   Medical dictionary

  • rifamycin — rif·a·my·cin …   English syllables

  • rifamycin — ˌrifəˈmīsən noun ( s) Etymology: International Scientific Vocabulary, alteration of earlier rifomycin, from rif (from Rififi, title of a French film (1954), name arbitrarily assigned by the drug s Italian discoverers to a group of antibacterial… …   Useful english dictionary

  • Rifamycin-B oxidase — In enzymology, a rifamycin B oxidase (EC number| is an enzyme that catalyzes the chemical reaction:rifamycin B + O2 ightleftharpoons rifamycin O + H2O2Thus, the two substrates of this enzyme are rifamycin B and O2, whereas its two… …   Wikipedia

  • Rifamycin SV — РИФАМИЦИН SV ( Rifamycin SV ). Природный антибиотик, продуцируемый лучистым грибом Streptomyces mediterranei. На основе этого антибиотика получены полусинтетические соединения, основным из которых является рифампицин (см.), применяемый в основном …   Словарь медицинских препаратов

  • rifamycin, rifomycin — A complex antibiotic, isolated from Nocardia mediterranei, that is active against Mycobacterium tuberculosis and Staphylococcus aureus; it is poorly absorbed from the gastrointestinal tract and often causes irritation and severe pain at the sites …   Medical dictionary

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