... mode of action for kCIII would be independent of the HflB substrate. Inthis study, we tested the ability of CIII to protect r32from HflB digestion. The inhibition of HflB-mediated proteolysis of ... in the pres-ence of CIII, and 65% of r32remained undigestedafter 80 min, compared with 40% for the control(r32alone, Fig. 2C). The inhibitory action of CIIIC on the proteolysis of r32by ... only for CII? Weexamined the mode of the inhibitory action of CIII onproteolysis of the heat shock sigma factor r32, anothersubstrate of HflB. Like proteolysis of CII, r32proteol-ysis...