[1] Department of Chemistry and Biochemistry, University of California-Los Angeles, Los Angeles,CA,90095, United States
[2] Department of Biological Chemistry, University of California-Los Angeles, Los Angeles,CA,90095, United States
[3] UCLA-DOE Institute, University of California-Los Angeles, Los Angeles,CA,90095, United States
[4] Molecular Biology Institute, University of California-Los Angeles, Los Angeles,CA,90095, United States