1ohv: Difference between revisions

← Older edit

Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)

OCA

@@ Line 1: / Line 1: @@
-[[Image:1ohv.png|left|200px]]
-<!--
+==4-AMINOBUTYRATE-AMINOTRANSFERASE FROM PIG==
-The line below this paragraph, containing "STRUCTURE_1ohv", creates the "Structure Box" on the page.
+<StructureSection load='1ohv' size='340' side='right'caption='[[1ohv]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
-You may change the PDB parameter (which sets the PDB file loaded into the applet)
+== Structural highlights ==
-or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
+<table><tr><td colspan='2'>[[1ohv]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Sus_scrofa Sus scrofa]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=1gtx 1gtx]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1OHV OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1OHV FirstGlance]. <br>
-or leave the SCENE parameter empty for the default display.
+</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=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=FES:FE2/S2+(INORGANIC)+CLUSTER'>FES</scene>, <scene name='pdbligand=PLP:PYRIDOXAL-5-PHOSPHATE'>PLP</scene></td></tr>
-{{STRUCTURE_1ohv|  PDB=1ohv  |  SCENE=  }}
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1ohv FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ohv OCA], [https://pdbe.org/1ohv PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1ohv RCSB], [https://www.ebi.ac.uk/pdbsum/1ohv PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1ohv ProSAT]</span></td></tr>
+</table>
+== Function ==
+[https://www.uniprot.org/uniprot/GABT_PIG GABT_PIG] Catalyzes the conversion of gamma-aminobutyrate and L-beta-aminoisobutyrate to succinate semialdehyde and methylmalonate semialdehyde, respectively. Can also convert delta-aminovalerate and beta-alanine.
+== 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/oh/1ohv_consurf.spt"</scriptWhenChecked>
+    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.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=1ohv ConSurf].
+<div style="clear:both"></div>
+<div style="background-color:#fffaf0;">
+== Publication Abstract from PubMed ==
+Gamma-aminobutyric acid aminotransferase (GABA-AT) is a pyridoxal 5'-phosphate-dependent enzyme responsible for the degradation of the inhibitory neurotransmitter GABA. GABA-AT is a validated target for antiepilepsy drugs because its selective inhibition raises GABA concentrations in brain. The antiepilepsy drug, gamma-vinyl-GABA (vigabatrin) has been investigated in the past by various biochemical methods and resulted in several proposals for its mechanisms of inactivation. In this study we solved and compared the crystal structures of pig liver GABA-AT in its native form (to 2.3-A resolution) and in complex with vigabatrin as well as with the close analogue gamma-ethynyl-GABA (to 2.3 and 2.8 A, respectively). Both inactivators form a covalent ternary adduct with the active site Lys-329 and the pyridoxal 5'-phosphate (PLP) cofactor. The crystal structures provide direct support for specific inactivation mechanisms proposed earlier on the basis of radio-labeling experiments. The reactivity of GABA-AT crystals with the two GABA analogues was also investigated by polarized absorption microspectrophotometry. The spectral data are discussed in relation to the proposed mechanism. Intriguingly, all three structures revealed a [2Fe-2S] cluster of yet unknown function at the center of the dimeric molecule in the vicinity of the PLP cofactors.
-===4-AMINOBUTYRATE-AMINOTRANSFERASE FROM PIG===
+Structures of gamma-aminobutyric acid (GABA) aminotransferase, a pyridoxal 5'-phosphate, and [2Fe-2S] cluster-containing enzyme, complexed with gamma-ethynyl-GABA and with the antiepilepsy drug vigabatrin.,Storici P, De Biase D, Bossa F, Bruno S, Mozzarelli A, Peneff C, Silverman RB, Schirmer T J Biol Chem. 2004 Jan 2;279(1):363-73. Epub 2003 Oct 8. PMID:14534310<ref>PMID:14534310</ref>
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
-<!--
+</div>
-The line below this paragraph, {{ABSTRACT_PUBMED_14534310}}, adds the Publication Abstract to the page
+<div class="pdbe-citations 1ohv" style="background-color:#fffaf0;"></div>
-(as it appears on PubMed at http://www.pubmed.gov), where 14534310 is the PubMed ID number.
+== References ==
--->
+<references/>
-{{ABSTRACT_PUBMED_14534310}}
+__TOC__
+</StructureSection>
-==About this Structure==
+[[Category: Large Structures]]
-[[1ohv]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Sus_scrofa Sus scrofa]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=1gtx 1gtx]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1OHV OCA].
-==Reference==
-<ref group="xtra">PMID:14534310</ref><ref group="xtra">PMID:10393538</ref><references group="xtra"/>
-[[Category: 4-aminobutyrate transaminase]]
 [[Category: Sus scrofa]]
-[[Category: Schirmer, T.]]
+[[Category: Schirmer T]]
-[[Category: Storici, P.]]
+[[Category: Storici P]]
-[[Category: 4-aminobutyric acid]]
-[[Category: Aminotransferase]]
-[[Category: Antiepileptic drug target]]
-[[Category: Plp-dependent enzyme]]
-[[Category: Transferase]]