Author information:
(1)Department of Biochemistry and Molecular Genetics, University of Virginia, 
Charlottesville, VA 22901, USA.
(2)Department of Biochemistry and Molecular Genetics, University of Virginia, 
Charlottesville, VA 22901, USA; Department of Cell Biology, University of 
Virginia, Charlottesville, VA 22901, USA. Electronic address: 
drf3q@virginia.edu.