1. Department of Ecology and Evolutionary Biology University of California Los Angeles California 90095 USA
2. Moreton Bay Research Station Centre for Marine Science School of Biological Sciences University of Queensland Brisbane Queensland 4072 Australia
3. Department of Chemistry and Biochemistry University of California Los Angeles California 90095 USA
4. Department of Biological Chemistry David Geffen School of Medicine University of California Los Angeles California 90095 USA
5. UCLA/DOE Institute for Genomics and Proteomics University of California Los Angeles California 90095 USA