6.3.4.2 2'-deoxy-GTP 0 mM guanosine, kact: 1.5/sec, KA: 0.21 mM, Ki: 0.36 mM 674909 6.3.4.2 2'-deoxy-GTP the GTP analogue is capable of activating Gln-dependent CTP formation 674909 6.3.4.2 2-mercaptoethanol required for optimal activity, above 50 mM increase activity to 221% 648987 6.3.4.2 2-mercaptoethanol stimulates 648999 6.3.4.2 6-thio-GTP the GTP analogue is capable of activating Gln-dependent CTP formation 674909 6.3.4.2 6-thioguanosine 5'-triphosphate 0 mM guanosine, kact: 8.5/sec, KA: 0.035 mM, Ki: 0.27 mM 674909 6.3.4.2 dithiothreitol required for optimal activity, above 50 mM increase activity to 223% mM 648987 6.3.4.2 GDP slight activation 648982 6.3.4.2 GMP slight activation 648982 6.3.4.2 GTP - 694484