| Affiliation: | (1) Department of Chemistry, University of Washington, Box 351700, Seattle, WA 98195-7350, USA;(2) Department of Biochemistry, University of Washington, Box 357350, Seattle, WA 98195-7350, USA;(3) Department of Biochemistry, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390-9038, USA; |
