Scheme 1. Proposed Schemes for the Reaction of P with NH₂-CAM^a.

^aRate constants are derived from the plots in Figure 5. For the sake of simplicity, CmlI^ox and CmlI^red are abbreviated as E^ox and E^red, respectively. P' and E' represent CmlI species that are kinetically distinct from P and E, respectively. Part A represents the case in which there is a single reaction pathway for P reacting with NH₂-CAM. Part B represents the case in which two parallel pathways are possible beginning from two forms of P.