1. C. M. Fraser, J. D. Gocayne, O. White, M. D. Adams, R. A. Clayton, R. D. Fleischmann, C. J. Bult, A. R. Kerlavage, G. Sutton, J. M. Kelley, J. L. Fritchman, J. F. Weidman, K. V. Small, M. Sandusky, J. Fuhrmann, D. Nguyen, T. R. Utterback, D. M. Saudek, C. A. Phillips, and J. C. Venter are at the Institute for Genomic Research, 9712 Medical Center Drive, Rockville, MD 20850, USA.
2. J. M. Merrick is in the Department of Microbiology, State University of New York at Buffalo, Buffalo, NY 14214, USA.
3. J.-F. Tomb, B. A. Dougherty and H. O. Smith are at the Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
4. K. F. Bott, P.-C. Hu, T. S. Lucier, S. N. Peterson, and C. A. Hutchison III are at the University of North Carolina at Chapel Hill, School of Medicine, Chapel Hill, NC 27599, USA.