Molecular Medicine, Hospital for Sick Children, Toronto, Ontario, Canada (R.P.H, J.E.D., P.A.C., J.D.F.-K.); Department of Biochemistry, University of Toronto, Toronto, Ontario, Canada (J.D.F.-K.); Center for Structural Biology (Z.Y., C.G.B.) and Department of Chemistry (C.G.B.), University of Alabama at Birmingham, Birmingham, Alabama; and Department of Physiology, UT Southwestern Medical Center, Dallas, Texas (L.M., P.J.T.).

Molecular Medicine, Hospital for Sick Children, Toronto, Ontario, Canada (R.P.H, J.E.D., P.A.C., J.D.F.-K.); Department of Biochemistry, University of Toronto, Toronto, Ontario, Canada (J.D.F.-K.); Center for Structural Biology (Z.Y., C.G.B.) and Department of Chemistry (C.G.B.), University of Alabama at Birmingham, Birmingham, Alabama; and Department of Physiology, UT Southwestern Medical Center, Dallas, Texas (L.M., P.J.T.).

Molecular Medicine, Hospital for Sick Children, Toronto, Ontario, Canada (R.P.H, J.E.D., P.A.C., J.D.F.-K.); Department of Biochemistry, University of Toronto, Toronto, Ontario, Canada (J.D.F.-K.); Center for Structural Biology (Z.Y., C.G.B.) and Department of Chemistry (C.G.B.), University of Alabama at Birmingham, Birmingham, Alabama; and Department of Physiology, UT Southwestern Medical Center, Dallas, Texas (L.M., P.J.T.).

Molecular Medicine, Hospital for Sick Children, Toronto, Ontario, Canada (R.P.H, J.E.D., P.A.C., J.D.F.-K.); Department of Biochemistry, University of Toronto, Toronto, Ontario, Canada (J.D.F.-K.); Center for Structural Biology (Z.Y., C.G.B.) and Department of Chemistry (C.G.B.), University of Alabama at Birmingham, Birmingham, Alabama; and Department of Physiology, UT Southwestern Medical Center, Dallas, Texas (L.M., P.J.T.).

Molecular Medicine, Hospital for Sick Children, Toronto, Ontario, Canada (R.P.H, J.E.D., P.A.C., J.D.F.-K.); Department of Biochemistry, University of Toronto, Toronto, Ontario, Canada (J.D.F.-K.); Center for Structural Biology (Z.Y., C.G.B.) and Department of Chemistry (C.G.B.), University of Alabama at Birmingham, Birmingham, Alabama; and Department of Physiology, UT Southwestern Medical Center, Dallas, Texas (L.M., P.J.T.).

Molecular Medicine, Hospital for Sick Children, Toronto, Ontario, Canada (R.P.H, J.E.D., P.A.C., J.D.F.-K.); Department of Biochemistry, University of Toronto, Toronto, Ontario, Canada (J.D.F.-K.); Center for Structural Biology (Z.Y., C.G.B.) and Department of Chemistry (C.G.B.), University of Alabama at Birmingham, Birmingham, Alabama; and Department of Physiology, UT Southwestern Medical Center, Dallas, Texas (L.M., P.J.T.).

Molecular Medicine, Hospital for Sick Children, Toronto, Ontario, Canada (R.P.H, J.E.D., P.A.C., J.D.F.-K.); Department of Biochemistry, University of Toronto, Toronto, Ontario, Canada (J.D.F.-K.); Center for Structural Biology (Z.Y., C.G.B.) and Department of Chemistry (C.G.B.), University of Alabama at Birmingham, Birmingham, Alabama; and Department of Physiology, UT Southwestern Medical Center, Dallas, Texas (L.M., P.J.T.).

Molecular Medicine, Hospital for Sick Children, Toronto, Ontario, Canada (R.P.H, J.E.D., P.A.C., J.D.F.-K.); Department of Biochemistry, University of Toronto, Toronto, Ontario, Canada (J.D.F.-K.); Center for Structural Biology (Z.Y., C.G.B.) and Department of Chemistry (C.G.B.), University of Alabama at Birmingham, Birmingham, Alabama; and Department of Physiology, UT Southwestern Medical Center, Dallas, Texas (L.M., P.J.T.).