作者单位:Department of Biochemistry and Cellular and Molecular Biology, University of Tennessee, Knoxville[1]Division of Physical Biochemistry, MRC National Institute for Medical Research, The Ridgeway, Mill[2]Centre d'études d'Agents Pathogènes et Biotechnologies Pour la Santé (CPBS), UMR 5236 CNRS[3]Volunteer, 8 rue Dom Vaissette, 34000 Montpellier, France[4]