Kinetic model for AcPhe-puromycin synthesis carried out in the presence of spermine analogues, with complex C formed in the presence of the FWR fraction. C, complex C; S, puromycin; I and I(A), spermine analogue bound to the inhibition site and activation site of complex C, respectively; C′, CI′, CI′(A), and CI(A)I′, ribosomal complexes after their reaction with puromycin.