This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.

Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.

3wnt

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Revision as of 16:52, 2 January 2017

Multiple binding modes of benzyl isothiocyanate inhibitor complexed with Macrophage Migration Inhibitory Factor

Structural highlights

3wnt is a 3 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	, ,
Related:	3wnr, 3wns, 4osf
Gene:	GLIF, MIF, MMIF (HUMAN)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

[MIF_HUMAN] Genetic variations in MIF are associated with susceptibility to rheumatoid arthritis systemic juvenile (RASJ) [MIM:604302]. An inflammatory articular disorder with systemic-onset beginning before the age of 16. It represents a subgroup of juvenile arthritis associated with severe extraarticular features and occasionally fatal complications. During active phases of the disorder, patients display a typical daily spiking fever, an evanescent macular rash, lymphadenopathy, hepatosplenomegaly, serositis, myalgia and arthritis.

Function

[MIF_HUMAN] Pro-inflammatory cytokine. Involved in the innate immune response to bacterial pathogens. The expression of MIF at sites of inflammation suggests a role as mediator in regulating the function of macrophages in host defense. Counteracts the anti-inflammatory activity of glucocorticoids. Has phenylpyruvate tautomerase and dopachrome tautomerase activity (in vitro), but the physiological substrate is not known. It is not clear whether the tautomerase activity has any physiological relevance, and whether it is important for cytokine activity.^[1] ^[2]

Publication Abstract from PubMed

Macrophage migration inhibitory factor (MIF) is a pleiotropic cytokine that has roles in the innate immune response, and also contributes to inflammatory disease. While the biological properties of MIF are closely linked to protein-protein interactions, MIF also has tautomerase activity. Inhibition of this activity interferes with the interaction of MIF with protein partners e.g. the CD74 receptor, and tautomerase inhibitors show promise in disease models including multiple sclerosis and colitis. Isothiocyanates inhibit MIF tautomerase activity via covalent modification of the N-terminal proline. We systematically explored variants of benzyl and phenethyl isothiocyanates, to define determinants of inhibition. In particular, substitution with hydroxyl, chloro, fluoro and trifluoro moieties at the para and meta positions were evaluated. In assays on treated cells and recombinant protein, the IC50 varied from 250 nM to >100 muM. X-ray crystal structures of selected complexes revealed that two binding modes are accessed by some compounds, perhaps owing to strain in short linkers between the isothiocyanate and aromatic ring. The variety of binding modes confirms the existence of two subsites for inhibitors and establishes a platform for the development of potent inhibitors of MIF that only need to target one of these subsites.

Multiple binding modes of isothiocyanates that inhibit macrophage migration inhibitory factor.,Spencer ES, Dale EJ, Gommans AL, Rutledge MT, Vo CT, Nakatani Y, Gamble AB, Smith RA, Wilbanks SM, Hampton MB, Tyndall JD Eur J Med Chem. 2015 Mar 26;93:501-10. doi: 10.1016/j.ejmech.2015.02.012. Epub, 2015 Feb 24. PMID:25743213^[3]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Oddo M, Calandra T, Bucala R, Meylan PR. Macrophage migration inhibitory factor reduces the growth of virulent Mycobacterium tuberculosis in human macrophages. Infect Immun. 2005 Jun;73(6):3783-6. PMID:15908412 doi:10.1128/IAI.73.6.3783-3786.2005
↑ Emonts M, Sweep FC, Grebenchtchikov N, Geurts-Moespot A, Knaup M, Chanson AL, Erard V, Renner P, Hermans PW, Hazelzet JA, Calandra T. Association between high levels of blood macrophage migration inhibitory factor, inappropriate adrenal response, and early death in patients with severe sepsis. Clin Infect Dis. 2007 May 15;44(10):1321-8. Epub 2007 Apr 5. PMID:17443469 doi:10.1086/514344
↑ Spencer ES, Dale EJ, Gommans AL, Rutledge MT, Vo CT, Nakatani Y, Gamble AB, Smith RA, Wilbanks SM, Hampton MB, Tyndall JD. Multiple binding modes of isothiocyanates that inhibit macrophage migration inhibitory factor. Eur J Med Chem. 2015 Mar 26;93:501-10. doi: 10.1016/j.ejmech.2015.02.012. Epub, 2015 Feb 24. PMID:25743213 doi:http://dx.doi.org/10.1016/j.ejmech.2015.02.012

1 Structural highlights
2 Disease
3 Function
4 Publication Abstract from PubMed
5 See Also
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/3wnt"

@@ Line 1: / Line 1: @@
 ==Multiple binding modes of benzyl isothiocyanate inhibitor complexed with Macrophage Migration Inhibitory Factor==
 <StructureSection load='3wnt' size='340' side='right' caption='[[3wnt]], [[Resolution|resolution]] 2.07&Aring;' scene=''>
@@ Line 6: / Line 7: @@
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3wnr|3wnr]], [[3wns|3wns]], [[4osf|4osf]]</td></tr>
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">GLIF, MIF, MMIF ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
-<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3wnt FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3wnt OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3wnt RCSB], [http://www.ebi.ac.uk/pdbsum/3wnt PDBsum]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3wnt FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3wnt OCA], [http://pdbe.org/3wnt PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3wnt RCSB], [http://www.ebi.ac.uk/pdbsum/3wnt PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3wnt ProSAT]</span></td></tr>
 </table>
 == Disease ==
@@ Line 20: / Line 21: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 3wnt" style="background-color:#fffaf0;"></div>
 ==See Also==

3wnt

From Proteopedia

Revision as of 16:52, 2 January 2017

Multiple binding modes of benzyl isothiocyanate inhibitor complexed with Macrophage Migration Inhibitory Factor

Structural highlights

Disease

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox