>4X2W_1|Chains A, B|NS6 Protease|Murine norovirus 1 (223997) VSIWSRVVQFGTGWGFWVSGHVFITAKHVAPPKGTEIFGRKPGDFTVTSSGDFLKYYFTSAVRPDIPAMVLENGCQEGVVASVLVKRASGEMLALAVRMGSQAAIKIGSAVVHGQTGMLLTGSNAKAQDLGTIPGDAGCPYVYKKGNTWVVIGVHVAATRSGNTVIAATHGEPTLEALE