4osf

From Proteopedia

(Difference between revisions)

Current revision

4-(2-isothiocyanatoethyl)phenol inhibitor complexed with Macrophage Migration Inhibitory Factor

Structural highlights

4osf is a 3 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 1.62Å
Ligands:	, , ,
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/4osf"

@@ Line 4: / Line 4: @@
 == Structural highlights ==
 <table><tr><td colspan='2'>[[4osf]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4OSF OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4OSF FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=4MT:N-[2-(4-HYDROXYPHENYL)ETHYL]THIOFORMAMIDE'>4MT</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=IPA:ISOPROPYL+ALCOHOL'>IPA</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.62&#8491;</td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=4MT:N-[2-(4-HYDROXYPHENYL)ETHYL]THIOFORMAMIDE'>4MT</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=IPA:ISOPROPYL+ALCOHOL'>IPA</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
 <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=4osf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4osf OCA], [https://pdbe.org/4osf PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4osf RCSB], [https://www.ebi.ac.uk/pdbsum/4osf PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4osf ProSAT]</span></td></tr>
 </table>

4osf

From Proteopedia

Current revision

4-(2-isothiocyanatoethyl)phenol 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?)

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