2.7.1.175 ATP - 737320, 739666, 759499 2.7.1.175 ATP dependent on 717432, 717600, 717816 2.7.1.175 ATP dependent on, ATP is not replaceable as phosphoryl-group donor 717163 2.7.1.175 ATP dependent on. ATP cannot be replaced by other nucleotides as a phosphoryl-group donor 717739 2.7.1.175 GTP can substitute for ATP 717432 2.7.1.175 additional information CTP and TTP show no activity, while GTP with 2.1% activity compared to ATP and UTP with 2.7% show only poor activity as phosphoryl-group donors 717163 2.7.1.175 UTP can substitute for ATP 717432