1. Whitney Laboratory for Marine Bioscience and the Department of Neuroscience, University of Florida, St. Augustine, Florida 32080, Proteomics Core of the ICBR and Department of Chemistry, University of Florida, Gainesville, Florida 32010, Department of Biochemistry, Eötvös Loránd University, Pázmány P.s. 1/c., Budapest 1117, Hungary, and Laboratory of Molecular Physiology, NHLBI, National Institutes of Health, Bethesda, Maryland 20892-1762