1. Department of Microbiology, Oregon State University, Corvallis, Oregon 97331, College of Pharmacy, Oregon State University, Corvallis, Oregon 97331, Center for Marine Biomedicine and Biotechnology, Scripps Institution of Oceanography, University of California San Diego, La Jolla, California 92037, and Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, California 92037