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<jats:p>The crystal structure of the regulatory domain of NMB2055, a putative MetR regulator from<jats:italic>Neisseria meningitidis</jats:italic>, is reported at 2.5 Å resolution. The structure revealed that there is a disulfide bond inside the predicted effector-binding pocket of the regulatory domain. Mutation of the cysteines (Cys103 and Cys106) that form the disulfide bond to serines resulted in significant changes to the structure of the effector pocket. Taken together with the high degree of conservation of these cysteine residues within MetR-related transcription factors, it is suggested that the Cys103 and Cys106 residues play an important role in the function of MetR regulators.</jats:p>

Original publication

DOI

10.1107/s1744309112010603

Type

Journal article

Journal

Acta Crystallographica Section F Structural Biology and Crystallization Communications

Publisher

International Union of Crystallography (IUCr)

Publication Date

01/07/2012

Volume

68

Pages

730 - 737