1. From the Department of Biochemistry and Molecular Biology (C.L., W.W., N.P., R.A.I., J.J, R.E.K., Y.X.) and Department of Obstetrics, Gynecology, and Reproductive Sciences (S.C.B., B.S.), The University of Texas Health Science Center at Houston; and The University of Texas Graduate School of Biomedical Sciences at Houston (N.P., J.J., R.E.K., Y.X.).