3bkn

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[[Image:3bkn.png|left|200px]]
 
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{{STRUCTURE_3bkn| PDB=3bkn | SCENE= }}
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==The structure of Mycobacterial bacterioferritin==
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<StructureSection load='3bkn' size='340' side='right'caption='[[3bkn]], [[Resolution|resolution]] 2.72&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[3bkn]] is a 12 chain structure with sequence from [https://en.wikipedia.org/wiki/Mycolicibacterium_smegmatis_MC2_155 Mycolicibacterium smegmatis MC2 155]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=3b3h 3b3h]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3BKN OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3BKN FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.72&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=EPE:4-(2-HYDROXYETHYL)-1-PIPERAZINE+ETHANESULFONIC+ACID'>EPE</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3bkn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3bkn OCA], [https://pdbe.org/3bkn PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3bkn RCSB], [https://www.ebi.ac.uk/pdbsum/3bkn PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3bkn ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/A0QY79_MYCS2 A0QY79_MYCS2] Iron-storage protein, whose ferroxidase center binds Fe(2+) ions, oxidizes them by dioxygen to Fe(3+), and participates in the subsequent Fe(3+) oxide mineral core formation within the central cavity of the protein complex (By similarity).[PIRNR:PIRNR002560]
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/bk/3bkn_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</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=3bkn ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Bacterioferritins, also known as cytochrome b (1), are oligomeric iron-storage proteins consisting of 24 identical amino acid chains, which form spherical particles consisting of 24 subunits and exhibiting 432 point-group symmetry. They contain one haem b molecule at the interface between two subunits and a di-nuclear metal binding center. The X-ray structure of bacterioferritin from Mycobacterium smegmatis (Ms-Bfr) was determined to a resolution of 2.7 A in the monoclinic space group C2. The asymmetric unit of the crystals contains 12 protein molecules: five dimers and two half-dimers located along the crystallographic twofold axis. Unexpectedly, the di-nuclear metal binding center contains zinc ions instead of the typically observed iron ions in other bacterioferritins.
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===The structure of Mycobacterial bacterioferritin===
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Bacterioferritin from Mycobacterium smegmatis contains zinc in its di-nuclear site.,Janowski R, Auerbach-Nevo T, Weiss MS Protein Sci. 2008 Jul;17(7):1138-50. Epub 2008 Apr 29. PMID:18445621<ref>PMID:18445621</ref>
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{{ABSTRACT_PUBMED_18445621}}
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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==About this Structure==
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<div class="pdbe-citations 3bkn" style="background-color:#fffaf0;"></div>
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[[3bkn]] is a 12 chain structure with sequence from [http://en.wikipedia.org/wiki/Mycobacterium_smegmatis_str._mc2_155 Mycobacterium smegmatis str. mc2 155]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=3b3h 3b3h]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3BKN OCA].
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==See Also==
==See Also==
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*[[Ferritin|Ferritin]]
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*[[Ferritin 3D structures|Ferritin 3D structures]]
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== References ==
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==Reference==
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<references/>
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<ref group="xtra">PMID:018445621</ref><references group="xtra"/>
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__TOC__
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[[Category: Mycobacterium smegmatis str. mc2 155]]
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</StructureSection>
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[[Category: Auerbach-Nevo, T.]]
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[[Category: Large Structures]]
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[[Category: Janowski, R.]]
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[[Category: Mycolicibacterium smegmatis MC2 155]]
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[[Category: Weiss, M S.]]
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[[Category: Auerbach-Nevo T]]
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[[Category: Bacterioferritin]]
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[[Category: Janowski R]]
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[[Category: Cytochrom b1]]
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[[Category: Weiss MS]]
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[[Category: Heme]]
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[[Category: Iron]]
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[[Category: Iron storage]]
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[[Category: Metal binding protein]]
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[[Category: Metal-binding]]
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[[Category: Mycobacterium smegmati]]
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Current revision

The structure of Mycobacterial bacterioferritin

PDB ID 3bkn

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