4mcs
From Proteopedia
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| - | ''' | + | ==A high resolution structure of human glutamate carboxypeptidase II (GCPII) His475Tyr variant in complex with glutamic acid== |
| + | <StructureSection load='4mcs' size='340' side='right' caption='[[4mcs]], [[Resolution|resolution]] 1.83Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[4mcs]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4MCS OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4MCS FirstGlance]. <br> | ||
| + | </td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ASP:ASPARTIC+ACID'>ASP</scene>, <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=GLU:GLUTAMIC+ACID'>GLU</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene>, <scene name='pdbligand=MAN:ALPHA-D-MANNOSE'>MAN</scene><br> | ||
| + | <tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4mcp|4mcp]], [[4mcq|4mcq]], [[4mcr|4mcr]]</td></tr> | ||
| + | <tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Glutamate_carboxypeptidase_II Glutamate carboxypeptidase II], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.17.21 3.4.17.21] </span></td></tr> | ||
| + | <tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4mcs FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4mcs OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4mcs RCSB], [http://www.ebi.ac.uk/pdbsum/4mcs PDBsum]</span></td></tr> | ||
| + | <table> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | In addition to its well-characterized role in the central nervous system, human glutamate carboxypeptidase II (GCPII; Uniprot ID Q04609) acts as a folate hydrolase in the small intestine, participating in the absorption of dietary polyglutamylated folates (folyl-n-gamma-l-glutamic acid), which are the provitamin form of folic acid (also known as vitamin B9 ). Despite the role of GCPII as a folate hydrolase, nothing is known about the processing of polyglutamylated folates by GCPII at the structural or enzymological level. Moreover, many epidemiologic studies on the relationship of the naturally occurring His475Tyr polymorphism to folic acid status suggest that this polymorphism may be associated with several pathologies linked to impaired folate metabolism. In the present study, we report: (a) a series X-ray structures of complexes between a catalytically inactive GCPII mutant (Glu424Ala) and a panel of naturally occurring polyglutamylated folates; (b) the X-ray structure of the His475Tyr variant at a resolution of 1.83 A; (c) the study of the recently identified arene-binding site of GCPII through mutagenesis (Arg463Leu, Arg511Leu and Trp541Ala), inhibitor binding and enzyme kinetics with polyglutamylated folates as substrates; and (d) a comparison of the thermal stabilities and folate-hydrolyzing activities of GCPII wild-type and His475Tyr variants. As a result, the crystallographic data reveal considerable details about the binding mode of polyglutamylated folates to GCPII, especially the engagement of the arene binding site in recognizing the folic acid moiety. Additionally, the combined structural and kinetic data suggest that GCPII wild-type and His475Tyr variant are functionally identical. DATABASE: Structural data have been deposited in the RCSB Protein Data Bank database under accession numbers 4MCS (GCPII-His475Tyr-glutamate), 4MCP (GCPII-Glu424Ala-FolGlu1 ), 4MCQ (GCPII-Glu424Ala-FolGlu2 ) and 4MCR (GCPII-Glu424Ala-FolGlu3 ). | ||
| - | + | Structural and biochemical characterization of the folyl-poly-gamma-l-glutamate hydrolyzing activity of human glutamate carboxypeptidase II.,Navratil M, Ptacek J, Sacha P, Starkova J, Lubkowski J, Barinka C, Konvalinka J FEBS J. 2014 May 25. doi: 10.1111/febs.12857. PMID:24863754<ref>PMID:24863754</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | + | </div> | |
| - | + | == References == | |
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Glutamate carboxypeptidase II]] | ||
| + | [[Category: Barinka, C.]] | ||
| + | [[Category: Navratil, M.]] | ||
| + | [[Category: Ptacek, J.]] | ||
| + | [[Category: Sacha, P.]] | ||
| + | [[Category: Folate hydrolase 1]] | ||
| + | [[Category: Folh1]] | ||
| + | [[Category: Gcpii]] | ||
| + | [[Category: Hydrolase]] | ||
| + | [[Category: Prostate specific membrane antigen]] | ||
| + | [[Category: Zinc metallopeptidase]] | ||
Revision as of 07:41, 18 June 2014
A high resolution structure of human glutamate carboxypeptidase II (GCPII) His475Tyr variant in complex with glutamic acid
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