1. R. S. Stephens, C. Lammel, W. Mitchell are with the Program in Infectious Diseases, University of California, Berkeley, CA 94720, USA, and the Francis I. Proctor Foundation, University of California, San Francisco, CA 94143, USA. S. Kalman, J. Fan, R. Marathe, R. W. Davis are at the DNA Sequencing and Technology Center, Stanford University, Stanford, CA 94305, USA. L. Aravind, R. L. Tatusov, E. V. Koonin are at the National Center for Biotechnology Information, National Library of Medicine, National...