>4d2o_B mol:protein length:284 PER-2 BETA-LACTAMASESAQSPLLKEQIETIVTGKKATVGVAVWGPDDLEPLLLNPFEKFPMQSVFKLHLAMLVLHQVDQGKLDLNQSVTVNRAAVLQNTWSPMMKDHQGDEFTVAVQQLLQYSVSHSDNVACDLLFELVGGPQALHAYIQSLGVKEAAVVANEAQMHADDQVQYQNWTSMKAAAQVLQKFEQKKQLSETSQALLWKWMVETTTGPQRLKGLLPAGTIVAHKTGTSGVRAGKTAATNDAGVIMLPDGRPLLVAVFVKDSAESERTNEAIIAQVAQAAYQFELKKLSAVSPD