2qd2

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{{STRUCTURE_2qd2| PDB=2qd2 | SCENE= }}
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==F110A variant of human ferrochelatase with protoheme bound==
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===F110A variant of human ferrochelatase with protoheme bound===
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<StructureSection load='2qd2' size='340' side='right' caption='[[2qd2]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
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{{ABSTRACT_PUBMED_17884090}}
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== Structural highlights ==
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<table><tr><td colspan='2'>[[2qd2]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2QD2 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2QD2 FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BCT:BICARBONATE+ION'>BCT</scene>, <scene name='pdbligand=CHD:CHOLIC+ACID'>CHD</scene>, <scene name='pdbligand=FES:FE2/S2+(INORGANIC)+CLUSTER'>FES</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=IMD:IMIDAZOLE'>IMD</scene><br>
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<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">DKFZp686P18130 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</td></tr>
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<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Ferrochelatase Ferrochelatase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.99.1.1 4.99.1.1] </span></td></tr>
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<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=2qd2 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2qd2 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2qd2 RCSB], [http://www.ebi.ac.uk/pdbsum/2qd2 PDBsum]</span></td></tr>
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<table>
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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/qd/2qd2_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/chain_selection.php?pdb_ID=2ata 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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Ferrochelatase (protoheme ferrolyase, EC 4.99.1.1) is the terminal enzyme in heme biosynthesis and catalyzes the insertion of ferrous iron into protoporphyrin IX to form protoheme IX (heme). Due to the many critical roles of heme, synthesis of heme is required by the vast majority of organisms. Despite significant investigation of both the microbial and eukaryotic enzyme, details of metal chelation remain unidentified. Here we present the first structure of the wild-type human enzyme, a lead-inhibited intermediate of the wild-type enzyme with bound metallated porphyrin macrocycle, the product bound form of the enzyme, and a higher resolution model for the substrate-bound form of the E343K variant. These data paint a picture of an enzyme that undergoes significant changes in secondary structure during the catalytic cycle. The role that these structural alterations play in overall catalysis and potential protein-protein interactions with other proteins, as well as the possible molecular basis for these changes, is discussed. The atomic details and structural rearrangements presented herein significantly advance our understanding of the substrate binding mode of ferrochelatase and reveal new conformational changes in a structurally conserved pi-helix that is predicted to have a central role in product release.
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==Function==
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A pi-helix switch selective for porphyrin deprotonation and product release in human ferrochelatase.,Medlock AE, Dailey TA, Ross TA, Dailey HA, Lanzilotta WN J Mol Biol. 2007 Nov 2;373(4):1006-16. Epub 2007 Aug 23. PMID:17884090<ref>PMID:17884090</ref>
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[[http://www.uniprot.org/uniprot/Q7KZA3_HUMAN Q7KZA3_HUMAN]] Catalyzes the ferrous insertion into protoporphyrin IX (By similarity).[RuleBase:RU000607]
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==About this Structure==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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[[2qd2]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2QD2 OCA].
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</div>
==See Also==
==See Also==
*[[Ferrochelatase|Ferrochelatase]]
*[[Ferrochelatase|Ferrochelatase]]
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== References ==
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==Reference==
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<references/>
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<ref group="xtra">PMID:017884090</ref><references group="xtra"/><references/>
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__TOC__
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</StructureSection>
[[Category: Ferrochelatase]]
[[Category: Ferrochelatase]]
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]

Revision as of 19:37, 30 September 2014

F110A variant of human ferrochelatase with protoheme bound

2qd2, resolution 2.20Å

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