VIRAL PROTEIN, CHIMERA, HYDROLASE, LATE PROTEIN, PHAGE P22 TAILSPIKE PROTEIN, MUTANT Y108WDEL, HEAD-BINDING DOMAIN, ISOLEUCINE ZIPPER PIIGCN4 MUTANT Y108WDEL OF THE HEADBINDING DOMAIN OF PHAGE P22 TAILSPIKE C-TERMINALLY FUSED TO ISOLEUCINE ZIPPER PIIGCN4 ( CHIMERA II) 2VNL