View source for 1atj


==RECOMBINANT HORSERADISH PEROXIDASE C1A==
<StructureSection load='1atj' size='340' side='right'caption='[[1atj]], [[Resolution|resolution]] 2.15&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1atj]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Armoracia_rusticana Armoracia rusticana]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ATJ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1ATJ 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]] 2.15&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</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=1atj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1atj OCA], [https://pdbe.org/1atj PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1atj RCSB], [https://www.ebi.ac.uk/pdbsum/1atj PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1atj ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/PER1A_ARMRU PER1A_ARMRU] Removal of H(2)O(2), oxidation of toxic reductants, biosynthesis and degradation of lignin, suberization, auxin catabolism, response to environmental stresses such as wounding, pathogen attack and oxidative stress. These functions might be dependent on each isozyme/isoform in each plant tissue.
== 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/at/1atj_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=1atj ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The crystal structure of horseradish peroxidase isozyme C (HRPC) has been solved to 2.15 A resolution. An important feature unique to the class III peroxidases is a long insertion, 34 residues in HRPC, between helices F and G. This region, which defines part of the substrate access channel, is not present in the core conserved fold typical of peroxidases from classes I and II. Comparison of HRPC and peanut peroxidase (PNP), the only other class III (higher plant) peroxidase for which an X-ray structure has been completed, reveals that the structure in this region is highly variable even within class III. For peroxidases of the HRPC type, characterized by a larger FG insertion (seven residues relative to PNP) and a shorter F' helix, we have identified the key residue involved in direct interactions with aromatic donor molecules. HRPC is unique in having a ring of three peripheral Phe residues, 142, 68 and 179. These guard the entrance to the exposed haem edge. We predict that this aromatic region is important for the ability of HRPC to bind aromatic substrates.

Crystal structure of horseradish peroxidase C at 2.15 A resolution.,Gajhede M, Schuller DJ, Henriksen A, Smith AT, Poulos TL Nat Struct Biol. 1997 Dec;4(12):1032-8. PMID:9406554<ref>PMID:9406554</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1atj" style="background-color:#fffaf0;"></div>

==See Also==
*[[Horseradish peroxidase|Horseradish peroxidase]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Armoracia rusticana]]
[[Category: Large Structures]]
[[Category: Gajhede M]]
[[Category: Henriksen A]]
[[Category: Poulos TL]]
[[Category: Schuller DJ]]
[[Category: Smith AT]]