1. Department of ChemistryNew York University 100 Washington Square East New York NY 10003 USA
2. The Aaron Diamond AIDS Research CenterAffiliate of the Rockefeller University 455 First Avenue, 7th Floor New York NY 10016 USA
3. Department of Obstetrics and GynecologyThe Jikei University School of Medicine 3-25-8 Nishi-Shimbashi, Minato-ku Tokyo 105 Japan
4. Department of ChemistryLudwig-Maximilians-Universität München Butenandtstrasse 5–13 81377 München Germany