[1] Indiana Univ Purdue Univ, Dept Phys, Indianapolis, IN 46205 USA
[2] Indiana Univ Purdue Univ, Dept Biol, Indianapolis, IN 46205 USA
[3] CUNY Queens Coll, Dept Chem & Biochem, Flushing, NY 11367 USA
[4] E Carolina Univ, Dept Biochem & Mol Biol, Greenville, NC USA
[5] E Carolina Univ, East Carolina Diabet & Obes Inst, Greenville, NC USA