Autocatalysis produces its own structures and functions. Autocatalysis occurs in the initial transcripts of rRNA. Additional sources of non-linear effects include autocatalysis, the process in which the reaction catalyzes itself. Moreover, autocatalysis is observed during Arp2/3-mediated actin polymerization. Autocatalysis plays a major role in the processes of life. This property is why autocatalysis is a contender as the foundational mechanism for complex evolution. SpeBz undergoes autocatalysis through at least eight intermediates to create the 28 kDa SpeBm.