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Macrophage migration inhibitory factor covalently complexed with phenethyl isothiocyanate

Macrophage migration inhibitory factor covalently complexed with phenethyl isothiocyanate Macrophage migration inhibitory factor is irreversibly inhibited via covalent modification by phenethyl isothiocyanate, a naturally occurring compound with anti‐inflammatory and anticancer properties. The structure of the modified protein obtained from X‐ray diffraction data to 1.64 Å resolution is presented. The inhibitor sits within a deep hydrophobic pocket between subunits of the homotrimer and is highly ordered. The secondary structure of macrophage migratory inhibitory factor is unchanged by this modification, but there are significant rearrangements, including of the side‐chain position of Tyr37 and the main chain of residues 31–34. These changes may explain the decreased binding of the modified protein to the receptor CD74. Together with the pocket, the areas of conformational change define specific targets for the design of more selective and potent inhibitors as potential therapeutics. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acta Crystallographica Section F Wiley

Macrophage migration inhibitory factor covalently complexed with phenethyl isothiocyanate

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References (30)

Publisher
Wiley
Copyright
International Union of Crystallography, 2012
ISSN
1744-3091
eISSN
1744-3091
DOI
10.1107/S1744309112030552
pmid
22949182
Publisher site
See Article on Publisher Site

Abstract

Macrophage migration inhibitory factor is irreversibly inhibited via covalent modification by phenethyl isothiocyanate, a naturally occurring compound with anti‐inflammatory and anticancer properties. The structure of the modified protein obtained from X‐ray diffraction data to 1.64 Å resolution is presented. The inhibitor sits within a deep hydrophobic pocket between subunits of the homotrimer and is highly ordered. The secondary structure of macrophage migratory inhibitory factor is unchanged by this modification, but there are significant rearrangements, including of the side‐chain position of Tyr37 and the main chain of residues 31–34. These changes may explain the decreased binding of the modified protein to the receptor CD74. Together with the pocket, the areas of conformational change define specific targets for the design of more selective and potent inhibitors as potential therapeutics.

Journal

Acta Crystallographica Section FWiley

Published: Sep 1, 2012

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