Difference between revisions of "Myxothiazol"
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{{MitoPedia | {{MitoPedia | ||
|abbr=Myx | |abbr=Myx | ||
|description= | |description='''Myxothiazol''' is an inhibitor of [[Complex III|CIII]] (inhibits also [[Complex I|CI]]; G. Lenaz). Myxothiazol binds to the Qo site of CIII (very close to cytochrome bL) and inhibits the transfer of electrons from reduced QH2 to the Rieske Iron sulfur protein [http://en.wikipedia.org/wiki/Coenzyme_Q_-_cytochrome_c_reductase#Inhibitors_of_complex_III]. | ||
|info=[[MiPNet09.12]] | |info=[[MiPNet09.12]] | ||
|type=Inhibitor ETS | |type=Inhibitor ETS | ||
Revision as of 10:41, 22 May 2012
- high-resolution terminology - matching measurements at high-resolution
Myxothiazol
Description
Myxothiazol is an inhibitor of CIII (inhibits also CI; G. Lenaz). Myxothiazol binds to the Qo site of CIII (very close to cytochrome bL) and inhibits the transfer of electrons from reduced QH2 to the Rieske Iron sulfur protein [1].
Abbreviation: Myx
Reference: MiPNet09.12
MitoPedia topics:
Inhibitor
Labels:
HRR: Chemicals; Media"Chemicals; Media" is not in the list (Oxygraph-2k, TIP2k, O2k-Fluorometer, pH, NO, TPP, Ca, O2k-Spectrophotometer, O2k-Manual, O2k-Protocol, ...) of allowed values for the "Instrument and method" property.
Application in HRR
Myx: Myxothiazol (Myxothiazol from Myxobacterium myxococcus fulvus, ~95%, HPLC), C25H33N3O3S2); Sigma T 5580, 1 mg, store at 4 °C: FW = 487.7
Caution: Very toxic. 2011-04-18: Substance is again available from Sigma, but with the product number cited above. The old product number was M 5779. Alternatively use Antimycin A as a Complex III inhibitor.
Preparation of 1 mM stock solution (dissolved in 99.9% Ethanol):
- 1) weigh 1 mg of Myxothiazol into a small glass vial
- 2) add 2.05 ml Ethanol
- 3) divide into 0.2 ml (use glass vials)
- 4) store at -20 °C
Oxygraph-2k Manual Titrations: MiPNet09.12
- Titration volume: 1 µl using a 10 µl syringe
- Final conc. in 2 ml O2k-chamber: 0.5 µM
