Binding of a protein chimera composed of a protein fragment ( 198 389 ) from __SP__ __NODE__ protein and of a mutant protein fragment ( 299 455 ) ( deletion 299 308 insertion 298 299 from a protein fragment ( 389 398 ) from __SP__ __NODE__ protein ) from __SP__ __NODE__ protein and a protein fragment ( 106 455 ) from __SP__ __NODE__ protein does not occur in __SP__ .