1. Department of Chemistry and Biochemistry University of California, San Diego 9500 Gilman Drive, Natural Sciences Building 3328 La Jolla CA 92093 USA
2. Biomimetic Membrane Chemistry (BioMemChem) Group Centro de Investigacións Científicas Avanzadas (CICA) Universidade da Coruña Rúa As Carballeiras 15701 A Coruña Spain
3. Department of Physics University of California San Diego 9500 Gilman Drive Mayer Hall Addition 4561 La Jolla CA 92093 USA
4. Department of Chemistry and Biochemistry University of California, San Diego 9500 Gilman Drive, Urey Hall 4102 La Jolla CA 92093 USA
5. X-ray Science Division Argonne National Laboratory 9700 South Cass Avenue Lemont IL 60439 USA