SOD assay kit

Paul S. Brookes. brookes at
Wed Nov 8 09:35:16 EST 2000

Why bother with a kit?   The original SOD paper by Fridovitch & McCord has 
a perfectly good method.  It's based on the inhibition (by SOD) of the 
reduction of cytochrome c in a standardized xanthine/xanthine oxidase 
system.  As I recall, 1 unit of SOD is the amount that inhibits the rate by 
half.   Its an easy assay in a spec' at 550nm.  Don't forget to add cyanide 
too, to inhibit re-oxidation of the cyt-c by mitochondrial cytochrome 
oxidase.  However, not too much cyanide or it will inhibit Cu/Zn SOD aswell 
- which happens to be a good way of measuring MnSOD activity.


Dr. Paul S. Brookes.            (brookes at
UAB Department of Pathology,   G004 Volker Hall
1670 University Blvd., Birmingham AL 35294 USA
Tel (001) 205 934 1915     Fax (001) 205 934 1775

The quality of e-mails can go down as well as up
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