2qd2: Difference between revisions

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 ==F110A variant of human ferrochelatase with protoheme bound==
-<StructureSection load='2qd2' size='340' side='right' caption='[[2qd2]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
+<StructureSection load='2qd2' size='340' side='right'caption='[[2qd2]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[2qd2]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. 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>
+<table><tr><td colspan='2'>[[2qd2]] is a 2 chain structure with sequence from [https://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 [https://proteopedia.org/fgij/fg.htm?mol=2QD2 FirstGlance]. <br>
-</td></tr><tr id='ligand'><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></td></tr>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.2&#8491;</td></tr>
-<tr id='gene'><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 HUMAN])</td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><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></td></tr>
-<tr id='activity'><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>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2qd2 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2qd2 OCA], [https://pdbe.org/2qd2 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2qd2 RCSB], [https://www.ebi.ac.uk/pdbsum/2qd2 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2qd2 ProSAT]</span></td></tr>
-<tr id='resources'><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://pdbe.org/2qd2 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2qd2 RCSB], [http://www.ebi.ac.uk/pdbsum/2qd2 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2qd2 ProSAT]</span></td></tr>
 </table>
+== Disease ==
+[https://www.uniprot.org/uniprot/HEMH_HUMAN HEMH_HUMAN] Defects in FECH are the cause of erythropoietic protoporphyria (EPP) [MIM:[https://omim.org/entry/177000 177000]. Porphyrias are inherited defects in the biosynthesis of heme, resulting in the accumulation and increased excretion of porphyrins or porphyrin precursors. They are classified as erythropoietic or hepatic, depending on whether the enzyme deficiency occurs in red blood cells or in the liver. EPP is a form of porphyria marked by excessive protoporphyrin in erythrocytes, plasma, liver and feces, and by widely varying photosensitive skin changes ranging from a burning or pruritic sensation to erythema, edema and wheals.<ref>PMID:1755842</ref> <ref>PMID:1376018</ref> <ref>PMID:7910885</ref> <ref>PMID:8757534</ref> <ref>PMID:9585598</ref> <ref>PMID:9740232</ref> <ref>PMID:10942404</ref> <ref>PMID:11375302</ref> <ref>PMID:12063482</ref> <ref>PMID:12601550</ref> <ref>PMID:15286165</ref> <ref>PMID:17196862</ref>
 == Function ==
-[[http://www.uniprot.org/uniprot/Q7KZA3_HUMAN Q7KZA3_HUMAN]] Catalyzes the ferrous insertion into protoporphyrin IX (By similarity).[RuleBase:RU000607]
+[https://www.uniprot.org/uniprot/HEMH_HUMAN HEMH_HUMAN] Catalyzes the ferrous insertion into protoporphyrin IX.
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
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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=2qd2 ConSurf].
 <div style="clear:both"></div>
-<div style="background-color:#fffaf0;">
-== Publication Abstract from PubMed ==
-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.
-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>
-From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
-</div>
-<div class="pdbe-citations 2qd2" style="background-color:#fffaf0;"></div>
 ==See Also==
-*[[Ferrochelatase|Ferrochelatase]]
+*[[Ferrochelatase 3D structures|Ferrochelatase 3D structures]]
 == References ==
 <references/>
 __TOC__
 </StructureSection>
-[[Category: Ferrochelatase]]
+[[Category: Homo sapiens]]
-[[Category: Human]]
+[[Category: Large Structures]]
-[[Category: Dailey, H A]]
+[[Category: Dailey HA]]
-[[Category: Dailey, T A]]
+[[Category: Dailey TA]]
-[[Category: Lanzilota, W N]]
+[[Category: Lanzilota WN]]
-[[Category: Medlock, A E]]
+[[Category: Medlock AE]]
-[[Category: Ross, T A]]
+[[Category: Ross TA]]
-[[Category: Biosynthetic protein]]
-[[Category: Heme biosynthesis]]
-[[Category: Heme synthesis]]
-[[Category: Iron]]
-[[Category: Lyase]]
-[[Category: Porphyrin biosynthesis]]
-[[Category: Protoporphyrin ix]]