5lbo

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<StructureSection load='5lbo' size='340' side='right' caption='[[5lbo]], [[Resolution|resolution]] 2.25&Aring;' scene=''>
<StructureSection load='5lbo' size='340' side='right' caption='[[5lbo]], [[Resolution|resolution]] 2.25&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[5lbo]] is a 4 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5LBO OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5LBO FirstGlance]. <br>
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<table><tr><td colspan='2'>[[5lbo]] is a 4 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=5LBO OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5LBO FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=6M5:(4~{a}~{S},8~{a}~{R})-2-cycloheptyl-4-[4-methoxy-3-[4-[4-(1~{H}-1,2,3,4-tetrazol-5-yl)phenoxy]butoxy]phenyl]-4~{a},5,8,8~{a}-tetrahydrophthalazin-1-one'>6M5</scene>, <scene name='pdbligand=DTT:2,3-DIHYDROXY-1,4-DITHIOBUTANE'>DTT</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=EPE:4-(2-HYDROXYETHYL)-1-PIPERAZINE+ETHANESULFONIC+ACID'>EPE</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=6M5:(4~{a}~{S},8~{a}~{R})-2-cycloheptyl-4-[4-methoxy-3-[4-[4-(1~{H}-1,2,3,4-tetrazol-5-yl)phenoxy]butoxy]phenyl]-4~{a},5,8,8~{a}-tetrahydrophthalazin-1-one'>6M5</scene>, <scene name='pdbligand=DTT:2,3-DIHYDROXY-1,4-DITHIOBUTANE'>DTT</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=EPE:4-(2-HYDROXYETHYL)-1-PIPERAZINE+ETHANESULFONIC+ACID'>EPE</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[5g2b|5g2b]], [[5g57|5g57]], [[5g5v|5g5v]], [[5l8c|5l8c]], [[5l8y|5l8y]], [[5l9h|5l9h]], [[5laq|5laq]]</td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[5g2b|5g2b]], [[5g57|5g57]], [[5g5v|5g5v]], [[5l8c|5l8c]], [[5l8y|5l8y]], [[5l9h|5l9h]], [[5laq|5laq]]</td></tr>
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<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">PDE4D, DPDE3 ([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/3',5'-cyclic-AMP_phosphodiesterase 3',5'-cyclic-AMP phosphodiesterase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.4.53 3.1.4.53] </span></td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/3',5'-cyclic-AMP_phosphodiesterase 3',5'-cyclic-AMP phosphodiesterase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.4.53 3.1.4.53] </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=5lbo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5lbo OCA], [http://pdbe.org/5lbo PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5lbo RCSB], [http://www.ebi.ac.uk/pdbsum/5lbo PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5lbo ProSAT]</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=5lbo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5lbo OCA], [http://pdbe.org/5lbo PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5lbo RCSB], [http://www.ebi.ac.uk/pdbsum/5lbo PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5lbo ProSAT]</span></td></tr>
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== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/PDE4D_HUMAN PDE4D_HUMAN]] Hydrolyzes the second messenger cAMP, which is a key regulator of many important physiological processes.<ref>PMID:15260978</ref> <ref>PMID:15576036</ref>
[[http://www.uniprot.org/uniprot/PDE4D_HUMAN PDE4D_HUMAN]] Hydrolyzes the second messenger cAMP, which is a key regulator of many important physiological processes.<ref>PMID:15260978</ref> <ref>PMID:15576036</ref>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Several trypanosomatid cyclic nucleotide phosphodiesterases (PDEs) possess a unique, parasite-specific cavity near the ligand-binding region that is referred to as the P-pocket. One of these enzymes, Trypanosoma brucei PDE B1 (TbrPDEB1), is considered a drug target for the treatment of African sleeping sickness. Here, we elucidate the molecular determinants of inhibitor binding and reveal that the P-pocket is amenable to directed design. By iterative cycles of design, synthesis, and pharmacological evaluation and by elucidating the structures of inhibitor-bound TbrPDEB1, hPDE4B, and hPDE4D complexes, we have developed 4a,5,8,8a-tetrahydrophthalazinones as the first selective TbrPDEB1 inhibitor series. Two of these, 8 (NPD-008) and 9 (NPD-039), were potent ( Ki = 100 nM) TbrPDEB1 inhibitors with antitrypanosomal effects (IC50 = 5.5 and 6.7 muM, respectively). Treatment of parasites with 8 caused an increase in intracellular cyclic adenosine monophosphate (cAMP) levels and severe disruption of T. brucei cellular organization, chemically validating trypanosomal PDEs as therapeutic targets in trypanosomiasis.
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Targeting a Subpocket in Trypanosoma brucei Phosphodiesterase B1 (TbrPDEB1) Enables the Structure-Based Discovery of Selective Inhibitors with Trypanocidal Activity.,Blaazer AR, Singh AK, de Heuvel E, Edink E, Orrling KM, Veerman JJN, van den Bergh T, Jansen C, Balasubramaniam E, Mooij WJ, Custers H, Sijm M, Tagoe DNA, Kalejaiye TD, Munday JC, Tenor H, Matheeussen A, Wijtmans M, Siderius M, de Graaf C, Maes L, de Koning HP, Bailey DS, Sterk GJ, de Esch IJP, Brown DG, Leurs R J Med Chem. 2018 May 1. doi: 10.1021/acs.jmedchem.7b01670. PMID:29672041<ref>PMID:29672041</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 5lbo" style="background-color:#fffaf0;"></div>
== References ==
== References ==
<references/>
<references/>
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</StructureSection>
</StructureSection>
[[Category: 3',5'-cyclic-AMP phosphodiesterase]]
[[Category: 3',5'-cyclic-AMP phosphodiesterase]]
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[[Category: Human]]
[[Category: Brown, D G]]
[[Category: Brown, D G]]
[[Category: Singh, A K]]
[[Category: Singh, A K]]

Revision as of 08:22, 2 May 2018

Crystal structure of human phosphodiesterase 4D2 catalytic domain with inhibitor NPD-001

5lbo, resolution 2.25Å

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