The crystal structure of coxsackievirus a21 and its interaction with icam-1.Xiao, C., Bator-Kelly, C.M., Rieder, E., Chipman, P.R., Craig, A., Kuhn, R.J., Wimmer, E., Rossmann, M.G.
(2005) Structure 13: 1019-1033
- PubMed: 16004874
- DOI: https://doi.org/10.1016/j.str.2005.04.011
- Primary Citation of Related Structures:
- PubMed Abstract:
CVA21 and polioviruses both belong to the Enterovirus genus in the family of Picornaviridae, whereas rhinoviruses form a distinct picornavirus genus. Nevertheless, CVA21 and the major group of human rhinoviruses recognize intercellular adhesion molecule-1 (ICAM-1) as their cellular receptor, whereas polioviruses use poliovirus receptor. The crystal structure of CVA21 has been determined to 3.2 A resolution. Its structure has greater similarity to poliovirus structures than to other known picornavirus structures. Cryo-electron microscopy (cryo-EM) was used to determine an 8.0 A resolution structure of CVA21 complexed with an ICAM-1 variant, ICAM-1(Kilifi). The cryo-EM map was fitted with the crystal structures of ICAM-1 and CVA21. Significant differences in the structure of CVA21 with respect to the poliovirus structures account for the inability of ICAM-1 to bind polioviruses. The interface between CVA21 and ICAM-1 has shape and electrostatic complementarity with many residues being conserved among those CVAs that bind ICAM-1.
Department of Biological Sciences, Purdue University, 915 West State Street, West Lafayette, IN 47907, USA.