SOD-like activity studies of cytokinin-copper(II) complexes.
Using the pulse radiolysis technique it was shown that copper(II) complexes of kinetin and 6-benzylaminopurine (6-BAP) catalyze O2- dismutation very efficiently at physiological pH. The 'turnover' rate constants at pH 7 were determined to be (1.5 +/- 0.3) x 10(9) and (2.2 +/- 0.4) x 10(9) M-1s-1 for 6-BAP and kinetin, respectively. The system was studied at pH 3-10 in the case of 6-BAP, and the results show that this complex catalyzes also HO2 dismutation efficiently.
Goldstein
S
S
Department of Physical Chemistry, Hebrew University of Jerusalem, Israel.
Czapski
G
G
D000225:Adenine / Q000031:analogs & derivatives* / Q000378:metabolism; D001593:Benzyl Compounds; D003300:Copper / Q000378:metabolism*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D007701:Kinetin; D011675:Pulse Radiolysis; D011687:Purines; D013482:Superoxide Dismutase / Q000378:metabolism*; D013481:Superoxides / Q000378:metabolism*
D001593:Benzyl Compounds; D011687:Purines; D013481:Superoxides; D003300:Copper; D013482:Superoxide Dismutase; D000225:Adenine; C480551:benzylaminopurine; D007701:Kinetin