interactions between the molybdenum-iron protein ( kp1 ) of nitrogenase ( reduced ferredoxin : dinitrogen oxidoreductase ( atp-hydrolysing , ) ec 1.18.2.1 ) from klebsiella pneumoniae and the divalent ions , mn2+ , mg2+ , ca2+ and ba2+ , have been studied by monitoring the water proton nmr relaxation enhancement caused by the paramagnetism of mn2+ .
C0028174
nitrogenase
C0030016
oxidoreductase