>3D0F_1|Chains A, B|Penicillin-binding 1 transmembrane protein MrcA|Nitrosomonas europaea ATCC 19718 (228410) SNAYRGPEAFLKLPKDLKDREALQDIMQDIGNSDDILAAVVLSATPGAVEAFRKNGETIRITGDGLKAAHRFLSNDPKIGEKRIRPGALIRVKKTEKGSWQIVQLP