[1] Center for Biomolecular Science and Engineering, University of California Santa Cruz, Santa Cruz, CA 95064, United States
[2] DOE Joint Genome Institute, Walnut Creek, CA 94598, United States
[3] Genomics Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States
[4] Howard Hughes Medical Institute, University of California Santa Cruz, Santa Cruz, CA 95064, United States
[5] Department of Biological Statistics and Computational Biology, Cornell University, Ithaca, NY 14853, United States