1. Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-0358, United States
2. DOE Joint Genome Institute, Lawrence Berkeley National Laboratory, Mail Stop: 91R183, 1 Cyclotron Road, Berkeley, California 94720, United States
3. Bigelow Laboratory for Ocean Sciences, East Boothbay, Maine 04544, United States
4. University of North Alabama, Florence, Alabama 35632, United States