>2bj1_B mol:protein length:138 NICKEL RESPONSIVE REGULATORMELIRFSISIPSKLLEKFDQIIEEIGYENRSEAIRDLIRDFIIRHEWEVGNEEVAGTITIVYNHDEGDVVKALLDLQHEYLDEIISSLHVHMDEHNCLEVIVVKGEAKKIKMIADKLLSLKGVKHGKLVMTSTGKELV