1vhr

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[[Image:1vhr.gif|left|200px]]<br />
 
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<applet load="1vhr" size="450" color="white" frame="true" align="right" spinBox="true"
 
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caption="1vhr, resolution 2.1&Aring;" />
 
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'''HUMAN VH1-RELATED DUAL-SPECIFICITY PHOSPHATASE'''<br />
 
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==Overview==
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==HUMAN VH1-RELATED DUAL-SPECIFICITY PHOSPHATASE==
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Dual specificity protein phosphatases (DSPs) regulate mitogenic signal, transduction and control the cell cycle. Here, the crystal structure of a, human DSP, vaccinia H1-related phosphatase (or VHR), was determined at 2.1, angstrom resolution. A shallow active site pocket in VHR allows for the, hydrolysis of phosphorylated serine, threonine, or tyrosine protein, residues, whereas the deeper active site of protein tyrosine phosphatases, (PTPs) restricts substrate specificity to only phosphotyrosine. Positively, charged crevices near the active site may explain the enzyme's preference, for substrates with two phosphorylated residues. The VHR structure defines, a conserved structural scaffold for both DSPs and PTPs. A "recognition, region," connecting helix alpha1 to strand beta1, may determine, differences in substrate specificity between VHR, the PTPs, and other, DSPs.
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<StructureSection load='1vhr' size='340' side='right'caption='[[1vhr]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
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== Structural highlights ==
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==About this Structure==
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<table><tr><td colspan='2'>[[1vhr]] 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=1VHR OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1VHR FirstGlance]. <br>
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1VHR is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] with SO4 and EPE as [http://en.wikipedia.org/wiki/ligands ligands]. Active as [http://en.wikipedia.org/wiki/Protein-tyrosine-phosphatase Protein-tyrosine-phosphatase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.3.48 3.1.3.48] Structure known Active Sites: GAA, GAB, PLA, PLB, RCA, RCB, VRA and VRB. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1VHR OCA].
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.1&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=EPE:4-(2-HYDROXYETHYL)-1-PIPERAZINE+ETHANESULFONIC+ACID'>EPE</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
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==Reference==
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1vhr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1vhr OCA], [https://pdbe.org/1vhr PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1vhr RCSB], [https://www.ebi.ac.uk/pdbsum/1vhr PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1vhr ProSAT]</span></td></tr>
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Crystal structure of the dual specificity protein phosphatase VHR., Yuvaniyama J, Denu JM, Dixon JE, Saper MA, Science. 1996 May 31;272(5266):1328-31. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=8650541 8650541]
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/DUS3_HUMAN DUS3_HUMAN] Shows activity both for tyrosine-protein phosphate and serine-protein phosphate, but displays a strong preference toward phosphotyrosines. Specifically dephosphorylates and inactivates ERK1 and ERK2.<ref>PMID:10224087</ref> <ref>PMID:11863439</ref>
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/vh/1vhr_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1vhr ConSurf].
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<div style="clear:both"></div>
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== References ==
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<references/>
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__TOC__
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</StructureSection>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
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[[Category: Protein-tyrosine-phosphatase]]
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[[Category: Large Structures]]
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[[Category: Single protein]]
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[[Category: Denu JM]]
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[[Category: Denu, J.M.]]
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[[Category: Dixon JE]]
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[[Category: Dixon, J.E.]]
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[[Category: Saper MA]]
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[[Category: Saper, M.A.]]
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[[Category: Yuvaniyama J]]
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[[Category: Yuvaniyama, J.]]
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[[Category: EPE]]
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[[Category: SO4]]
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[[Category: hydrolase]]
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[[Category: protein dual-specificity phosphatase]]
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''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Mon Nov 12 19:43:59 2007''
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Current revision

HUMAN VH1-RELATED DUAL-SPECIFICITY PHOSPHATASE

PDB ID 1vhr

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