[1] Baylor Coll Med, Dept Mol & Human Genet, Houston, TX 77030 USA
[2] Baylor Coll Med, Dept Mol Physiol & Biophys, Houston, TX 77030 USA
[3] Thomas Jefferson Univ, Jefferson Med Coll, Dept Microbiol & Immunol, Philadelphia, PA 19107 USA
[4] Tech Univ Dresden, BioInnovat Zentrum, D-01307 Dresden, Germany