2.7.1.130 D138A point mutant of conserved residue, not directly involved in ADP or Mg2+ binding. About 0.1% of wild-type activity 723650 2.7.1.130 D138A site-directed mutagenesis, the mutant shows altered activity compared to the wild-type enzyme 737675, 738621 2.7.1.130 D138N site-directed mutagenesis, the mutant shows altered activity compared to the wild-type enzyme 737675, 738621 2.7.1.130 D139A point mutant of conserved residue, not directly involved in ADP or Mg2+ binding. About 0.1% of wild-type activity 723650 2.7.1.130 D139A site-directed mutagenesis, the mutant shows altered activity compared to the wild-type enzyme 737675, 738621 2.7.1.130 D139N site-directed mutagenesis, the mutant shows altered activity compared to the wild-type enzyme 737675, 738621 2.7.1.130 D260A site-directed mutagenesis, the mutant shows altered activity compared to the wild-type enzyme 737675 2.7.1.130 D99A site-directed mutagenesis, the mutant shows altered activity compared to the wild-type enzyme 737675 2.7.1.130 D99E site-directed mutagenesis, the mutant shows altered activity compared to the wild-type enzyme 737675 2.7.1.130 D99N site-directed mutagenesis, the mutant shows altered activity compared to the wild-type enzyme 737675