Protein Disulfide Isomerase Activity of Some Plant Seeds

Abstract

  The activity of protein disulfide isomerase, in the extracts of several dormant seeds including soybean, rice, wheat, and maize was assayed. The activity was higher in the extracts of beans than in those of the other seeds. A correlation was significant (R=0.95 and 0.93; p<0.01) between the PDI activity and the concentration of protein soluble in a salt solution.