Abstract
The effects of organic solvents on the absorption spectrum of adrenodoxin were examined. The solvents produced hyperchromicity in the region between 250 nm and 700 nm. In dimethyl formamide, and dimethyl sulfoxide, a red shift of the principal peaks was observed. while in methanol, glycerol, and ethylene glycol, a slight blue shift was found. The resulting spectrum is somewhat similar to that of either chloroplast or clostridial ferredoxins, probably due to the environmental and/or symmetrical changes in the 2 iron - 2 labile sulfur chromophore.
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