[1] UConn Hlth, Dept Mol Biol & Biophys, Farmington, CT 06030 USA
[2] UConn Hlth, Dept Cell Biol, Farmington, CT USA
[3] Univ Wisconsin, Dept Biochem, 420 Henry Mall, Madison, WI 53705 USA
[4] Univ Wisconsin, Dept Comp Sci, 1210 W Dayton St, Madison, WI 53706 USA
[5] NIST, Inst Biosci & Biotechnol Res, Rockville, MD USA
[6] Univ Maryland, Rockville, MD USA