1. Department of Molecular, Cellular and Developmental Biology; Yale University; New Haven Connecticut 06520-8103
2. Department of Molecular Biophysics and Biochemistry; Yale University; New Haven Connecticut 06520-8103
3. Section on Integrative Biophysics; Eunice Kennedy Shriver National Institute of Child Health and Human Development, NIH; Bethesda Maryland 20892-1855
4. Department of Cell Biology; Yale University; New Haven Connecticut 06520-8103