Electrophoretic studies on the chelating tendency of bioactive sulphur-containing amino acids. The metal-methylcysteine-cysteine system.
Stability constants of binary Fe(III)-methylcysteine, Cr(III)-methylcysteine and mixed Fe(III)-methylcysteine-cysteine, Cr(III)-methylcysteine-cysteine complexes have been determined by paper electrophoresis at 0.1 M ionic strength and a temperature of 35 degrees C. The stability constants of Fe(III)-methylcysteine-cysteine and Cr(III)-methylcysteine-cysteine mixed complexes were found to be 6.00 +/- 0.07 and 5.05 +/- 0.15 (logarithm of stability constant values), respectively.
Tewari
Brij Bhushan
BB
Department of Chemistry, Faculty of Natural Sciences, University of Guyana, P.O. Box 10 1110, Georgetown, Guyana. brijtew@yahoo.com
D002614:Chelating Agents / Q000737:chemistry*; D003544:Cysteic Acid / Q000031:analogs & derivatives / Q000737:chemistry*; D003545:Cysteine / Q000737:chemistry*; D004590:Electrophoresis, Paper / Q000379:methods*; D008670:Metals / Q000737:chemistry*
D002614:Chelating Agents; D008670:Metals; C469782:methylcysteic acid; D003544:Cysteic Acid; D003545:Cysteine