Fig. 3.

a Nitrogen solubility of the insoluble protein fractions in 100 mM phosphate buffer and the buffer containing either 2% SDS, 10 mM DTT or 2% SDS and 10 mM DTT. b Increase in N solubility of the insoluble protein fractions relative to the phosphate buffer of solutions containing either 2% SDS, 10 mM DTT, or 2% SDS and 10 mM DTT