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.

2ooh

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Revision as of 09:05, 18 October 2017

Crystal Structure of MIF bound to a Novel Inhibitor, OXIM-11

Structural highlights

2ooh 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:	2oow, 2ooz
Gene:	MIF (HUMAN)
Activity:	Phenylpyruvate tautomerase, with EC number 5.3.2.1
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]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

Pharmacophores are chemical scaffolds upon which changes in chemical moieties (R-groups) at specific sites are made to identify a combination of R-groups that increases the therapeutic potency of a small molecule inhibitor while minimizing adverse effects. We developed a pharmacophore based on a carbonyloxime (OXIM) scaffold for macrophage migration inhibitory factor (MIF), a protein involved in the pathology of sepsis, to validate that inhibition of a catalytic site could produce therapeutic benefits. We studied the crystal structures of MIF.OXIM-based inhibitors and found two opposite orientations for binding to the active site that were dependent on the chemical structures of an R-group. One orientation was completely unexpected based on previous studies with hydroxyphenylpyruvate and (S,R)-3-(4-hydroxyphenyl)-4,5-dihydro-5-isoxazole acetic acid methyl ester (ISO-1). We further confirmed that the unexpected binding mode targets MIF in cellular studies by showing that one compound, OXIM-11, abolished the counter-regulatory activity of MIF on anti-inflammatory glucocorticoid action. OXIM-11 treatment of mice, initiated 24 h after the onset of cecal ligation and puncture-induced sepsis, significantly improved survival when compared with vehicle-treated controls, confirming that inhibition of the MIF catalytic site could produce therapeutic effects. The crystal structures of the MIF inhibitor complexes provide insight for further structure-based drug design efforts.

Alternative chemical modifications reverse the binding orientation of a pharmacophore scaffold in the active site of macrophage migration inhibitory factor.,Crichlow GV, Cheng KF, Dabideen D, Ochani M, Aljabari B, Pavlov VA, Miller EJ, Lolis E, Al-Abed Y J Biol Chem. 2007 Aug 10;282(32):23089-95. Epub 2007 May 25. PMID:17526494^[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
↑ Crichlow GV, Cheng KF, Dabideen D, Ochani M, Aljabari B, Pavlov VA, Miller EJ, Lolis E, Al-Abed Y. Alternative chemical modifications reverse the binding orientation of a pharmacophore scaffold in the active site of macrophage migration inhibitory factor. J Biol Chem. 2007 Aug 10;282(32):23089-95. Epub 2007 May 25. PMID:17526494 doi:http://dx.doi.org/10.1074/jbc.M701825200

1 Structural highlights
2 Disease
3 Function
4 Evolutionary Conservation
5 Publication Abstract from PubMed
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2ooh"

@@ Line 1: / Line 1: @@
 ==Crystal Structure of MIF bound to a Novel Inhibitor, OXIM-11==
 <StructureSection load='2ooh' size='340' side='right' caption='[[2ooh]], [[Resolution|resolution]] 1.85&Aring;' scene=''>
@@ Line 7: / Line 8: @@
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">MIF ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Phenylpyruvate_tautomerase Phenylpyruvate tautomerase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=5.3.2.1 5.3.2.1] </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=2ooh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ooh OCA], [http://pdbe.org/2ooh PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2ooh RCSB], [http://www.ebi.ac.uk/pdbsum/2ooh 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=2ooh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ooh OCA], [http://pdbe.org/2ooh PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2ooh RCSB], [http://www.ebi.ac.uk/pdbsum/2ooh PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2ooh ProSAT]</span></td></tr>
 </table>
 == Disease ==
@@ Line 32: / Line 33: @@
 </div>
 <div class="pdbe-citations 2ooh" style="background-color:#fffaf0;"></div>
-==See Also==
-*[[Macrophage inhibitory factor|Macrophage inhibitory factor]]
 == References ==
 <references/>

2ooh

From Proteopedia

Revision as of 09:05, 18 October 2017

Crystal Structure of MIF bound to a Novel Inhibitor, OXIM-11

Structural highlights

Disease

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox