Affiliation: | 1. Department of Chemistry, University of California and The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 (USA);2. Departments of Chemistry and Molecular and Cell Biology and Howard Hughes Medical Institute, University of California and The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 (USA), Fax: (+1)?510‐643‐2628 |