Erratum to: Appl Biochem Biotechnol (2008) 150:127–137

DOI 10.1007/s12010-008-8142-2

The original version of this article unfortunately contained a mistake. The affiliation of the third author is incorrect. The correct affiliation is: Division of Biochemistry, Chemistry Department, Faculty of Science, Fayoum University, Fayoum, Egypt.