5wa9

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m (Protected "5wa9" [edit=sysop:move=sysop])
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'''Unreleased structure'''
 
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The entry 5wa9 is ON HOLD until Paper Publication
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==Human Histidine Triad Nucleotide Binding Protein 1 (hHint1) H112N mutant nucleoside D-Ala phosphoramidate substrate complex==
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<StructureSection load='5wa9' size='340' side='right' caption='[[5wa9]], [[Resolution|resolution]] 1.15&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[5wa9]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5WA9 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5WA9 FirstGlance]. <br>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=9ZD:[(2~{R},3~{S},4~{R},5~{R})-5-(6-aminopurin-9-yl)-3,4-bis(oxidanyl)oxolan-2-yl]methoxy-~{N}-[(2~{R})-1-methoxy-1-oxidanylidene-propan-2-yl]phosphonamidic+acid'>9ZD</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene></td></tr>
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<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[5ipb|5ipb]], [[5ipc|5ipc]], [[5kma|5kma]], [[5kmb|5kmb]], [[3tw2|3tw2]]</td></tr>
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<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=5wa9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5wa9 OCA], [http://pdbe.org/5wa9 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5wa9 RCSB], [http://www.ebi.ac.uk/pdbsum/5wa9 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5wa9 ProSAT]</span></td></tr>
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</table>
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== Function ==
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[[http://www.uniprot.org/uniprot/HINT1_HUMAN HINT1_HUMAN]] Hydrolyzes adenosine 5'-monophosphoramidate substrates such as AMP-morpholidate, AMP-N-alanine methyl ester, AMP-alpha-acetyl lysine methyl ester and AMP-NH2 (By similarity).
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Nucleotide analogs that incorporate a metabolically labile nucleoside phosphoramidate (a ProTide) have found utility as prodrugs. In humans, ProTides can be cleaved by human histidine triad nucleotide binding protein 1 (hHint1) to expose the nucleotide monophosphate. Activation by this route circumvents highly selective nucleoside kinases that limit the use of nucleosides as prodrugs. To better understand the diversity of potential substrates of hHint1, we created and studied a series of phosphoramidate nucleosides. Using a combination of enzyme kinetics, X-ray crystallography, and isothermal titration calorimetry with both wild-type and inactive mutant enzymes, we have been able to explore the energetics of substrate binding and establish a structural basis for catalytic efficiency. Diverse nucleobases are well tolerated, but portions of the ribose are needed to position substrates for catalysis. Beneficial characteristics of the amine leaving group are also revealed. Structural principles revealed by these results may be exploited to tune the rate of substrate hydrolysis to strategically alter the intracellular release of the product nucleoside monophosphate from the ProTide.
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Authors:
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A Crystal Structure-Based Guide to the Design of Human Histidine Triad Nucleotide Binding Protein 1 (hHint1) Activated ProTides.,Maize KM, Shah R, Strom A, Kumarapperuma SC, Zhou AL, Wagner CR, Finzel BC Mol Pharm. 2017 Oct 2. doi: 10.1021/acs.molpharmaceut.7b00664. PMID:28968488<ref>PMID:28968488</ref>
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Description:
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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[[Category: Unreleased Structures]]
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</div>
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<div class="pdbe-citations 5wa9" style="background-color:#fffaf0;"></div>
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== References ==
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<references/>
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__TOC__
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</StructureSection>
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[[Category: Finzel, B C]]
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[[Category: Maize, K M]]
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[[Category: Histidine triad]]
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[[Category: Hydrolase]]

Revision as of 07:06, 18 October 2017

Human Histidine Triad Nucleotide Binding Protein 1 (hHint1) H112N mutant nucleoside D-Ala phosphoramidate substrate complex

5wa9, resolution 1.15Å

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