with partially purified lysosomal fractions ( mol . wt . approx . 25 000 ) or with highly purified cathepsin l or cathepsin b ( b1 ) proinsulin was converted into products migrating like the intermediate forms and insulin , and the intermediates were converted into products migrating like insulin and deoctapeptide-insulin in disc-electropherograms .
C0033362
proinsulin
C0021641
insulin