Identification
Name Capreomycin
Accession Number DB00314 (APRD00844)
Type small molecule
Description Cyclic peptide antibiotic similar to viomycin. It is produced by Streptomyces capreolus. [PubChem]
Structure
Categories (*)
Molecular Weight 1321.4123
Groups approved
Monoisotopic Weight 1320.698394286
Pharmacology
Indication Used in the treatment of tuberculosis in combination with other drugs.
Mechanism of action Little is known about capreomycin's exact mechanism of action, but it is thought to inhibit protein synthesis by binding to the 70S ribosomal unit. Capreomycin also binds to components in the bacterial cell which result in the production of abnormal proteins. These proteins are necessary for the bacteria's survival. Therefore the production of these abnormal proteins is ultimately fatal to the bacteria.
Absorption Not absorbed in significant quantities from the gastrointestinal tract and must be administered parenterally.
Protein binding Not Available
Biotransformation Not Available
Route of elimination When a 1-g dose of capreomycin was given intramuscularly to normal volunteers, 52% was excreted in the urine within 12 hours.
Toxicity Hypokalemia, hypocalcemia, hypomagnesemia, and an electrolyte disturbance resembling Bartter's syndrome have been reported to occur in patients with capreomycin toxicity. The subcutaneous median lethal dose (LD50) in mice was 514 mg/kg.
Affected organisms
  • Enteric bacteria and other eubacteria
Interactions
Drug Interactions Not Available
Food Interactions Not Available
16S rRNA
Name 16S rRNA
Gene Name Not Available
Pharmacological action yes
Actions inhibitor
References
  • Johansen SK, Maus CE, Plikaytis BB, Douthwaite S: Capreomycin binds across the ribosomal subunit interface using tlyA-encoded 2'-O-methylations in 16S and 23S rRNAs. Mol Cell. 2006 Jul 21;23(2):173-82. - Pubmed
DTHybrid score Not Available
23S rRNA
Name 23S rRNA
Gene Name Not Available
Pharmacological action yes
Actions inhibitor
References
  • Johansen SK, Maus CE, Plikaytis BB, Douthwaite S: Capreomycin binds across the ribosomal subunit interface using tlyA-encoded 2'-O-methylations in 16S and 23S rRNAs. Mol Cell. 2006 Jul 21;23(2):173-82. - Pubmed
DTHybrid score Not Available
70S ribosome
Name 70S ribosome
Gene Name Not Available
Pharmacological action yes
Actions inhibitor
References
  • Stanley RE, Blaha G, Grodzicki RL, Strickler MD, Steitz TA: The structures of the anti-tuberculosis antibiotics viomycin and capreomycin bound to the 70S ribosome. Nat Struct Mol Biol. 2010 Mar;17(3):289-93. Epub 2010 Feb 14. - Pubmed
DTHybrid score Not Available