6i5e

From Proteopedia

(Difference between revisions)

Current revision

X-ray structure of apo human soluble Epoxide Hydrolase C-terminal Domain (hsEH CTD)

Structural highlights

6i5e is a 2 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 2.6Å
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

HYES_HUMAN Bifunctional enzyme. The C-terminal domain has epoxide hydrolase activity and acts on epoxides (alkene oxides, oxiranes) and arene oxides. Plays a role in xenobiotic metabolism by degrading potentially toxic epoxides. Also determines steady-state levels of physiological mediators. The N-terminal domain has lipid phosphatase activity, with the highest activity towards threo-9,10-phosphonooxy-hydroxy-octadecanoic acid, followed by erythro-9,10-phosphonooxy-hydroxy-octadecanoic acid, 12-phosphonooxy-octadec-9Z-enoic acid, 12-phosphonooxy-octadec-9E-enoic acid, and p-nitrophenyl phospate.^[1] ^[2]

Publication Abstract from PubMed

Human soluble epoxide hydrolase (hsEH) is an enzyme responsible for the inactivation of bioactive epoxy fatty acids, and its inhibition is emerging as a promising therapeutical strategy to target hypertension, cardiovascular disease, pain and insulin sensitivity. Here, we uncover the molecular bases of hsEH inhibition mediated by the endogenous 15-deoxy-Delta(12,14)-Prostaglandin J2 (15d-PGJ2). Our data reveal a dual inhibitory mechanism, whereby hsEH can be inhibited by reversible docking of 15d-PGJ2 in the catalytic pocket, as well as by covalent locking of the same compound onto cysteine residues C423 and C522, remote to the active site. Biophysical characterisations allied with in silico investigations indicate that the covalent modification of the reactive cysteines may be part of a hitherto undiscovered allosteric regulatory mechanism of the enzyme. This study provides insights into the molecular modes of inhibition of hsEH epoxy-hydrolytic activity and paves the way for the development of new allosteric inhibitors.

15-deoxy-Delta(12,14)-Prostaglandin J2 inhibits human soluble epoxide hydrolase by a dual orthosteric and allosteric mechanism.,Abis G, Charles RL, Kopec J, Yue WW, Atkinson RA, Bui TTT, Lynham S, Popova S, Sun YB, Fraternali F, Eaton P, Conte MR Commun Biol. 2019 May 17;2:188. doi: 10.1038/s42003-019-0426-2. eCollection 2019. PMID:31123712^[3]

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

References

↑ Cronin A, Mowbray S, Durk H, Homburg S, Fleming I, Fisslthaler B, Oesch F, Arand M. The N-terminal domain of mammalian soluble epoxide hydrolase is a phosphatase. Proc Natl Acad Sci U S A. 2003 Feb 18;100(4):1552-7. Epub 2003 Feb 6. PMID:12574508 doi:10.1073/pnas.0437829100
↑ Newman JW, Morisseau C, Harris TR, Hammock BD. The soluble epoxide hydrolase encoded by EPXH2 is a bifunctional enzyme with novel lipid phosphate phosphatase activity. Proc Natl Acad Sci U S A. 2003 Feb 18;100(4):1558-63. Epub 2003 Feb 6. PMID:12574510 doi:10.1073/pnas.0437724100
↑ Abis G, Charles RL, Kopec J, Yue WW, Atkinson RA, Bui TTT, Lynham S, Popova S, Sun YB, Fraternali F, Eaton P, Conte MR. 15-deoxy-Delta(12,14)-Prostaglandin J2 inhibits human soluble epoxide hydrolase by a dual orthosteric and allosteric mechanism. Commun Biol. 2019 May 17;2:188. doi: 10.1038/s42003-019-0426-2. eCollection 2019. PMID:31123712 doi:http://dx.doi.org/10.1038/s42003-019-0426-2

1 Structural highlights
2 Function
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/6i5e"

@@ Line 3: / Line 3: @@
 <StructureSection load='6i5e' size='340' side='right'caption='[[6i5e]], [[Resolution|resolution]] 2.60&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[6i5e]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6I5E OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6I5E FirstGlance]. <br>
+<table><tr><td colspan='2'>[[6i5e]] is a 2 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=6I5E OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6I5E FirstGlance]. <br>
-</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">EPHX2 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</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]] 2.6&#8491;</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=6i5e FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6i5e OCA], [http://pdbe.org/6i5e PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6i5e RCSB], [http://www.ebi.ac.uk/pdbsum/6i5e PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6i5e ProSAT]</span></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=6i5e FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6i5e OCA], [https://pdbe.org/6i5e PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6i5e RCSB], [https://www.ebi.ac.uk/pdbsum/6i5e PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6i5e ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[http://www.uniprot.org/uniprot/HYES_HUMAN HYES_HUMAN]] Bifunctional enzyme. The C-terminal domain has epoxide hydrolase activity and acts on epoxides (alkene oxides, oxiranes) and arene oxides. Plays a role in xenobiotic metabolism by degrading potentially toxic epoxides. Also determines steady-state levels of physiological mediators. The N-terminal domain has lipid phosphatase activity, with the highest activity towards threo-9,10-phosphonooxy-hydroxy-octadecanoic acid, followed by erythro-9,10-phosphonooxy-hydroxy-octadecanoic acid, 12-phosphonooxy-octadec-9Z-enoic acid, 12-phosphonooxy-octadec-9E-enoic acid, and p-nitrophenyl phospate.<ref>PMID:12574508</ref> <ref>PMID:12574510</ref>
+[https://www.uniprot.org/uniprot/HYES_HUMAN HYES_HUMAN] Bifunctional enzyme. The C-terminal domain has epoxide hydrolase activity and acts on epoxides (alkene oxides, oxiranes) and arene oxides. Plays a role in xenobiotic metabolism by degrading potentially toxic epoxides. Also determines steady-state levels of physiological mediators. The N-terminal domain has lipid phosphatase activity, with the highest activity towards threo-9,10-phosphonooxy-hydroxy-octadecanoic acid, followed by erythro-9,10-phosphonooxy-hydroxy-octadecanoic acid, 12-phosphonooxy-octadec-9Z-enoic acid, 12-phosphonooxy-octadec-9E-enoic acid, and p-nitrophenyl phospate.<ref>PMID:12574508</ref> <ref>PMID:12574510</ref>
 <div style="background-color:#fffaf0;">
 == Publication Abstract from PubMed ==
@@ Line 18: / Line 18: @@
 </div>
 <div class="pdbe-citations 6i5e" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[Epoxide hydrolase 3D structures|Epoxide hydrolase 3D structures]]
 == References ==
 <references/>
 __TOC__
 </StructureSection>
-[[Category: Human]]
+[[Category: Homo sapiens]]
 [[Category: Large Structures]]
-[[Category: Abis, G]]
+[[Category: Abis G]]
-[[Category: Conte, M R]]
+[[Category: Conte MR]]
-[[Category: Kopec, J]]
+[[Category: Kopec J]]
-[[Category: Yue, W W]]
+[[Category: Yue WW]]
-[[Category: Alpha_beta hydrolase fold]]
-[[Category: Apoprotein]]
-[[Category: Hseh ctd]]
-[[Category: Hydrolase]]

6i5e

From Proteopedia

Current revision

X-ray structure of apo human soluble Epoxide Hydrolase C-terminal Domain (hsEH CTD)

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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