N(7)-methyl-GTP + L-histidyl-[protein] => N(tele)-(N(7)-methylguanosine 5'-phospho)-L-histidyl-[protein] + diphosphate
n(7)-methyl-gtp + l-histidyl-[protein] => n(tele)-(n(7)-methylguanosine 5'-phospho)-l-histidyl-[protein] + diphosphate