putrescine(out) + ATP + H2O = putrescine(in) + ADP + phosphate + H(+)
putrescine(out) + atp + h2o = putrescine(in) + adp + phosphate + h(+)
putrescine(out) + ATP + H2O = putrescine(in) + ADP + phosphate + H(+)
putrescine(out) + atp + h2o = putrescine(in) + adp + phosphate + h(+)