Table 1.

The mass values of the folding intermediates * of BPTI and [K8D]-proCCN′.

des[5–55]	Peak †	[M + H]+calcd.	[M + H]+obs.	Number of Thiol and Disulfide Bond(s)	Number of the Peptide Reagent(s)
	a	8826.4 Da	8821.8 Da	2 × SH, 2 × SS	2
[K8D]-proCCN′	Peak ‡	[M + H]+calcd.	[M + H]+obs.	Number of Thiol and Disulfide Bond(s)	Number of the Peptide Reagents
	1	31,927 Da	31,933 Da	6 × SH	6
	2	29,616 Da	29,612 Da	4 × SH, 1 × SS	4
	3	29,616 Da	29,596 Da	4 × SH, 1 × SS	4
	4	27,304 Da	27,299 Da	2 × SH, 2 × SS	2
	5	27,304 Da	27,260 Da	2 × SH, 2 × SS	2
	6	24,992 Da	24,969 Da	3 × SS	0

* The folding intermediates treated with the Male-Arg₅-Tyr-NH₂ reagent. ^† Peak a was purified by RP-HPLC, as shown in Figure 2b. ^‡ The numbers correspond to the peak numbers of the labeled folding intermediates of prococoonase on RP-HPLC as described below.