AMPK phosphorylates RPTOR at S792: We represent AMPK-mediated inhibitory phosphorylation of RPTOR at S792 using a unidirectional rule, as follows: AMPK(T172~P)+RPTOR(S792~0)->AMPK(T172~P)+RPTOR(S792~P)p9(12) where p9 is a (pseudo first-order) rate constant.