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Direct Electrochemistry of Porcine Purple Acid Phosphatase (Uteroferrin)
Bernhardt, Paul V.; Schenk, Gerhard; Wilson, Gregory J.
Cyclic voltammetry of the non-heme diiron enzyme porcine purple acid phosphatase (uteroferrin, Uf) has been reported for the first time. Totally reversible one-electron oxidation responses (FeIII-FeII f FeIII-FeIII) are seen both in the absence and in the presence of weak competitive inhibitors phosphate and arsenate, and dissociation constants of these oxoanion complexes formed with uteroferrin in its oxidized state (Ufo) have been determined. The effect of pH on the redox potentials has been investigated in the range 3 < pH < 6.5, enabling acid dissociation constants for Ufo and its phosphate and arsenate complexes to be calculated.
Keyword(s): Chemistry; Electrochemistry; Porcine Purple Acid Phosphatase; Uteroferrin
Publication Date:
Type: Journal article
Peer-Reviewed: Yes
Institution: Maynooth University
Citation(s): Bernhardt, Paul V. and Schenk, Gerhard and Wilson, Gregory J. (2004) Direct Electrochemistry of Porcine Purple Acid Phosphatase (Uteroferrin). Biochemistry, 43. pp. 10387-10392. ISSN 0006-2960
Publisher(s): American Chemical Society
File Format(s): application/pdf
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First Indexed: 2020-01-31 06:29:17 Last Updated: 2021-07-31 06:48:21