View source for 7vhr


==Apostichopus japonicus ferritin==
<StructureSection load='7vhr' size='340' side='right'caption='[[7vhr]], [[Resolution|resolution]] 2.76&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[7vhr]] is a 24 chain structure with sequence from [https://en.wikipedia.org/wiki/Apostichopus_japonicus Apostichopus japonicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7VHR OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7VHR 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]] 2.756&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</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=7vhr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7vhr OCA], [https://pdbe.org/7vhr PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7vhr RCSB], [https://www.ebi.ac.uk/pdbsum/7vhr PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7vhr ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/Q2QJV4_STIJA Q2QJV4_STIJA] Stores iron in a soluble, non-toxic, readily available form. Important for iron homeostasis. Iron is taken up in the ferrous form and deposited as ferric hydroxides after oxidation.[RuleBase:RU361145]
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Ferritin is considered to be an ubiquitous and conserved iron-binding protein that plays a crucial role in iron storage, detoxification, and immune response. Although ferritin is of critical importance for almost all kingdoms of life, there is a lack of knowledge about its role in the marine invertebrate sea cucumber (Apostichopus japonicus). In this study, we characterized the first crystal structure of A. japonicus ferritin (AjFER) at 2.75 A resolution. The structure of AjFER shows a 4-3-2 symmetry cage-like hollow shell composed of 24 subunits, mostly similar to the structural characteristics of other known ferritin species, including the conserved ferroxidase center and 3-fold channel. The 3-fold channel consisting of three 3-fold negative amino acid rings suggests a potential pathway in which metal ions can be first captured by Asp120 from the outside environment, attracted by His116 and Cys128 when entering the channel, and then transferred by Glu138 from the 3-fold channel to the ferroxidase site. Overall, the presented crystal structure of AjFER may provide insights into the potential mechanism of the metal transport pathway for related marine invertebrate ferritins.

Crystallographic characterization of a marine invertebrate ferritin from the sea cucumber Apostichopus japonicus.,Wu Y, Ming T, Huo C, Qiu X, Su C, Lu C, Zhou J, Li Y, Su X FEBS Open Bio. 2022 Mar;12(3):664-674. doi: 10.1002/2211-5463.13375. Epub 2022, Feb 7. PMID:35090095<ref>PMID:35090095</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 7vhr" style="background-color:#fffaf0;"></div>

==See Also==
*[[Ferritin 3D structures|Ferritin 3D structures]]
== References ==
<references/>
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</StructureSection>
[[Category: Apostichopus japonicus]]
[[Category: Large Structures]]
[[Category: Ming TH]]
[[Category: Su XR]]
[[Category: Wu Y]]