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4xrx

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Revision as of 06:10, 6 October 2017

Crystal structure of a metabolic reductase with (E)-5-((1-methyl-5-oxo-2-thioxoimidazolidin-4-ylidene)methyl)pyridin-2(1H)-one

Structural highlights

4xrx is a 2 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
Related:	4xs3
Activity:	Isocitrate dehydrogenase (NADP(+)), with EC number 1.1.1.42
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

[IDHC_HUMAN] Defects in IDH1 are involved in the development of glioma (GLM) [MIM:137800]. Gliomas are central nervous system neoplasms derived from glial cells and comprise astrocytomas, glioblastoma multiforme, oligodendrogliomas, and ependymomas. Note=Mutations affecting Arg-132 are tissue-specific, and suggest that this residue plays a unique role in the development of high-grade gliomas. Mutations of Arg-132 to Cys, His, Leu or Ser abolish magnesium binding and abolish the conversion of isocitrate to alpha-ketoglutarate. Instead, alpha-ketoglutarate is converted to R(-)-2-hydroxyglutarate. Elevated levels of R(-)-2-hydroxyglutarate are correlated with an elevated risk of malignant brain tumors.

Publication Abstract from PubMed

Somatic mutations of isocitrate dehydrogenase 1 (IDH1) at R132 are frequently found in certain cancers such as glioma. With losing the activity of wild-type IDH1, the R132H and R132C mutant proteins can reduce alpha-ketoglutaric acid (alpha-KG) to d-2-hydroxyglutaric acid (D2HG). The resulting high concentration of D2HG inhibits many alpha-KG-dependent dioxygenases, including histone demethylases, to cause broad histone hypermethylation. These aberrant epigenetic changes are responsible for the initiation of these cancers. We report the synthesis, structure-activity relationships, enzyme kinetics, and binding thermodynamics of a novel series of 2-thiohydantoin and related compounds, among which several compounds are potent inhibitors of mutant IDH1 with Ki as low as 420 nM. X-ray crystal structures of IDH1(R132H) in complex with two inhibitors are reported, showing their inhibitor-protein interactions. These compounds can decrease the cellular concentration of D2HG, reduce the levels of histone methylation, and suppress the proliferation of stem-like cancer cells in BT142 glioma with IDH1 R132H mutation.

Inhibition of Cancer-Associated Mutant Isocitrate Dehydrogenases by 2-Thiohydantoin Compounds.,Wu F, Jiang H, Zheng B, Kogiso M, Yao Y, Zhou C, Li XN, Song Y J Med Chem. 2015 Sep 10;58(17):6899-908. doi: 10.1021/acs.jmedchem.5b00684. Epub , 2015 Aug 26. PMID:26280302^[1]

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

References

↑ Wu F, Jiang H, Zheng B, Kogiso M, Yao Y, Zhou C, Li XN, Song Y. Inhibition of Cancer-Associated Mutant Isocitrate Dehydrogenases by 2-Thiohydantoin Compounds. J Med Chem. 2015 Sep 10;58(17):6899-908. doi: 10.1021/acs.jmedchem.5b00684. Epub , 2015 Aug 26. PMID:26280302 doi:http://dx.doi.org/10.1021/acs.jmedchem.5b00684

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/4xrx"

@@ Line 1: / Line 1: @@
 ==Crystal structure of a metabolic reductase with (E)-5-((1-methyl-5-oxo-2-thioxoimidazolidin-4-ylidene)methyl)pyridin-2(1H)-one==
 <StructureSection load='4xrx' size='340' side='right' caption='[[4xrx]], [[Resolution|resolution]] 3.20&Aring;' scene=''>
@@ Line 6: / Line 7: @@
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4xs3|4xs3]]</td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Isocitrate_dehydrogenase_(NADP(+)) Isocitrate dehydrogenase (NADP(+))], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.1.1.42 1.1.1.42] </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=4xrx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4xrx OCA], [http://pdbe.org/4xrx PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4xrx RCSB], [http://www.ebi.ac.uk/pdbsum/4xrx 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=4xrx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4xrx OCA], [http://pdbe.org/4xrx PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4xrx RCSB], [http://www.ebi.ac.uk/pdbsum/4xrx PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4xrx ProSAT]</span></td></tr>
 </table>
 == Disease ==
@@ Line 19: / Line 20: @@
 </div>
 <div class="pdbe-citations 4xrx" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[Isocitrate dehydrogenase|Isocitrate dehydrogenase]]
 == References ==
 <references/>

4xrx

From Proteopedia

Revision as of 06:10, 6 October 2017

Crystal structure of a metabolic reductase with (E)-5-((1-methyl-5-oxo-2-thioxoimidazolidin-4-ylidene)methyl)pyridin-2(1H)-one

Structural highlights

Disease

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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