[1] Univ Texas San Antonio, Dept Biol, San Antonio, TX 78249 USA
[2] Univ Calif Irvine, Reeve Irvine Res Ctr, Irvine, CA 92697 USA
[3] Univ Calif Santa Cruz, Dept Biol, Santa Cruz, CA 95060 USA
[4] Texas A&M Hlth Sci Ctr, Irma Lerma Rangel Coll Pharm, Kingsville, TX 78363 USA
[5] St Jude Childrens Res Hosp, Dept Pharmaceut Sci, Memphis, TN 38105 USA
[6] Univ Texas San Antonio, Dept Chem, San Antonio, TX 78249 USA