1. Department of Chemistry, College of Staten Island, City University of New York, 2800 Victory Boulevard, Staten Island, New York 10314, United States
2. Ph.D. Programs in Biochemistry and Chemistry, The Graduate Center of the City University of New York, New York, New York 10016, United States
3. Laboratory of Molecular Structure and Function/Mass Spectrometry Facility, Department of Molecular Biology, New York State Institute for Basic Research in Developmental Disabilities, Staten Island, New York 10314-6399, United States
4. Departments of Biochemistry and Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, New York 10461, United States