View source for 3iww


==Crystal structure of human glutamate carboxypeptidase II (GCPII) in a complex with DBIBzL, a urea-based inhibitor==
<StructureSection load='3iww' size='340' side='right'caption='[[3iww]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3iww]] is a 1 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=3IWW OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3IWW FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.3&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=MAN:ALPHA-D-MANNOSE'>MAN</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=YZE:N~2~-{[(1S)-1-CARBOXYBUT-3-EN-1-YL]CARBAMOYL}-N~6~-[(4-IODOPHENYL)CARBONYL]-L-LYSINE'>YZE</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></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=3iww FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3iww OCA], [https://pdbe.org/3iww PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3iww RCSB], [https://www.ebi.ac.uk/pdbsum/3iww PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3iww ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/FOLH1_HUMAN FOLH1_HUMAN] Has both folate hydrolase and N-acetylated-alpha-linked-acidic dipeptidase (NAALADase) activity. Has a preference for tri-alpha-glutamate peptides. In the intestine, required for the uptake of folate. In the brain, modulates excitatory neurotransmission through the hydrolysis of the neuropeptide, N-aceylaspartylglutamate (NAAG), thereby releasing glutamate. Isoform PSM-4 and isoform PSM-5 would appear to be physiologically irrelevant. Involved in prostate tumor progression.  Also exhibits a dipeptidyl-peptidase IV type activity. In vitro, cleaves Gly-Pro-AMC.
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/iw/3iww_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</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=3iww ConSurf].
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== Publication Abstract from PubMed ==
We report a strategy based on bioisosterism to improve the physicochemical properties of existing hydrophilic, urea-based GCPII inhibitors. Comprehensive structure-activity relationship studies of the P1' site of ZJ-43- and DCIBzL-based compounds identified several glutamate-free inhibitors with K(i) values below 20nM. Among them, compound 32d (K(i)=11nM) exhibited selective uptake in GCPII-expressing tumors by SPECT-CT imaging in mice. A novel conformational change of amino acids in the S1' pharmacophore pocket was observed in the X-ray crystal structure of GCPII complexed with 32d.

Bioisosterism of urea-based GCPII inhibitors: Synthesis and structure-activity relationship studies.,Wang H, Byun Y, Barinka C, Pullambhatla M, Bhang HE, Fox JJ, Lubkowski J, Mease RC, Pomper MG Bioorg Med Chem Lett. 2010 Jan 1;20(1):392-7. Epub 2009 Oct 24. PMID:19897367<ref>PMID:19897367</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 3iww" style="background-color:#fffaf0;"></div>

==See Also==
*[[Carboxypeptidase 3D structures|Carboxypeptidase 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Barinka C]]
[[Category: Lubkowski J]]