[1] Johns Hopkins Univ, Dept Biol, Baltimore, MD 21218 USA
[2] J Craig Venter Inst, Inst Genom Res, Rockville, MD USA
[3] Univ Paris Sud, Inst Genet & Microbiol, Paris, France
[4] Univ Calif Santa Cruz, Dept Biomol Engn, Santa Cruz, CA 95064 USA
[5] Univ Florida, Dept Microbiol & Cell Sci, Gainesville, FL 32611 USA
[6] Univ Penn, Dept Biol, Philadelphia, PA 19104 USA
[7] Univ Nottingham, Inst Genet, Nottingham NG7 2RD, England
[8] Ohio State Univ, Dept Microbiol, Columbus, OH 43210 USA
[9] Univ Calif Davis, Genome Ctr, Davis, CA 95616 USA
[10] Max Planck Inst Biochem, Dept Membrane Biochem, D-82152 Martinsried, Germany
[11] Univ Wisconsin, Dept Biochem, Madison, WI 53705 USA
[12] Univ Calif Davis, Dept Med Microbiol & Immunol, Davis, CA 95616 USA
[13] Univ Calif Davis, Dept Ecol & Evolut, Davis, CA 95616 USA