[1] Penn State Univ, Dept Chem Engn, University Pk, PA 16802 USA
[2] Penn State Univ, Dept Chem, University Pk, PA 16802 USA
[3] Penn State Univ, Dept Biochem, University Pk, PA 16802 USA
[4] Penn State Univ, Dept Mol Biol, University Pk, PA 16802 USA