Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, Rochester, MN, USA.|Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, Rochester, MN, USA.|Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, Rochester, MN, USA.|Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, Rochester, MN, USA.|Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, Rochester, MN, USA.|Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, Rochester, MN, USA.