UCLA-DOE Institute for Genomics and Proteomics, Los Angeles, California, United States of America.|Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, Iowa, United States of America.|Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, Iowa, United States of America.|UCLA-DOE Institute for Genomics and Proteomics, Los Angeles, California, United States of America, Molecular Biology Institute, University of California, Los Angeles, Los Angeles, California, United States of America, Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California, United States of America.