Difference between revisions of "Cyanide"
From Bioblast
Line 1: | Line 1: | ||
{{MitoPedia | {{MitoPedia | ||
|abbr=KCN | |abbr=KCN | ||
|description='''Cyanide''' ( | |description='''Cyanide''' (usually added as KCN) is a competitive inhibitor of [[cytochrome c oxidase | cytochcrome ''c'' oxidase (CIV)]]. Inhibition is reversed by pyruvate and high oxygen levels. | ||
|info=[[MiPNet09.12]] | |info=[[MiPNet09.12]] | ||
|type=Inhibitor ETS | |type=Inhibitor ETS |
Revision as of 15:11, 24 August 2012
Description
Cyanide (usually added as KCN) is a competitive inhibitor of cytochcrome c oxidase (CIV). Inhibition is reversed by pyruvate and high oxygen levels.
Abbreviation: KCN
Reference: MiPNet09.12
MitoPedia methods:
Respirometry
MitoPedia topics:
Inhibitor
Application in HRR
Inhibitor titrations, CIV-assay, and ROX
- Cyanide and determination of residual oxygen consumption (ROX).
- Complex IV assay
- Oxygraph-2k Manual Titrations: MiPNet09.12
- Final conc. in 2 ml O2k-chamber: 1 mM
- Titration volume: 2 Β΅l of 1 M stock, using a 10 Β΅l syringe.
Preparation of 1 M KCN stock
Kcn(KCN): Fluka 60178, 100 g, store at R.T.; FW = 65.12
Caution: KCN is photosensitive and hygroscopic; HCN is volatile and very toxic! Prepare the solution fresh everyday!
- 1) Weigh 13 mg of KCN
- 2) Dissolve in 0.2 ml H2O
- 3) The pH of the solution may be very alkaline - adjust to physiological pH with HCl