1s6a: Difference between revisions

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-[[Image:1s6a.png|left|200px]]
-{{STRUCTURE_1s6a|  PDB=1s6a  |  SCENE=  }}
+==The X-ray structure of the cyanobacteria Synechocystis hemoglobin "cyanoglobin" with azide ligand==
+<StructureSection load='1s6a' size='340' side='right'caption='[[1s6a]], [[Resolution|resolution]] 1.69&Aring;' scene=''>
+== Structural highlights ==
+<table><tr><td colspan='2'>[[1s6a]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Synechocystis_sp._PCC_6803 Synechocystis sp. PCC 6803]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1S6A OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1S6A 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]] 1.69&#8491;</td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=AZI:AZIDE+ION'>AZI</scene>, <scene name='pdbligand=FLC:CITRATE+ANION'>FLC</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=1s6a FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1s6a OCA], [https://pdbe.org/1s6a PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1s6a RCSB], [https://www.ebi.ac.uk/pdbsum/1s6a PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1s6a ProSAT]</span></td></tr>
+</table>
+== Function ==
+[https://www.uniprot.org/uniprot/TRHBN_SYNY3 TRHBN_SYNY3] Forms a very stable complex with oxygen. The oxygen dissociation rate is 0.011 s(-1).
+== 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/s6/1s6a_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=1s6a ConSurf].
+<div style="clear:both"></div>
+<div style="background-color:#fffaf0;">
+== Publication Abstract from PubMed ==
+The crystal structures of cyanide and azide-bound forms of the truncated hemoglobin from Synechocystis are presented at 1.8 angstroms resolution. A comparison with the structure of the endogenously liganded protein reveals a conformational shift unprecedented in hemoglobins, and provides the first picture of a hexacoordinate hemoglobin in both the bis-histidyl and the exogenously coordinated states. The structural changes between the different conformations are confined to two regions of the protein; the B helix, and the E helix, including the EF loop. A molecular "hinge" controlling movement of the E helix is observed in the EF loop, which is composed of three principal structural elements: Arg64, the heme-d-propionate, and a three-residue extension of the F helix. Additional features of the structural transition between the two protein conformations are discussed as they relate to the complex ligand-binding behavior observed in hexacoordinate hemoglobins, and the potential physiological function of this class of proteins.
-===The X-ray structure of the cyanobacteria Synechocystis hemoglobin "cyanoglobin" with azide ligand===
+Crystallographic analysis of synechocystis cyanoglobin reveals the structural changes accompanying ligand binding in a hexacoordinate hemoglobin.,Trent JT 3rd, Kundu S, Hoy JA, Hargrove MS J Mol Biol. 2004 Aug 20;341(4):1097-108. PMID:15289104<ref>PMID:15289104</ref>
-{{ABSTRACT_PUBMED_15289104}}
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
+</div>
-==About this Structure==
+<div class="pdbe-citations 1s6a" style="background-color:#fffaf0;"></div>
-[[1s6a]] is a 1 chain structure of [[Hemoglobin]] with sequence from [http://en.wikipedia.org/wiki/Synechocystis_sp. Synechocystis sp.]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1S6A OCA].
 ==See Also==
-*[[Hemoglobin|Hemoglobin]]
+*[[Hemoglobin 3D structures|Hemoglobin 3D structures]]
+== References ==
-==Reference==
+<references/>
-<ref group="xtra">PMID:015289104</ref><references group="xtra"/>
+__TOC__
-[[Category: Synechocystis sp.]]
+</StructureSection>
-[[Category: Hargrove, M S.]]
+[[Category: Large Structures]]
-[[Category: Hoy, J A.]]
+[[Category: Synechocystis sp. PCC 6803]]
-[[Category: III, J T.Trent.]]
+[[Category: Hargrove MS]]
-[[Category: Kundu, S.]]
+[[Category: Hoy JA]]
-[[Category: 2 on 2 helical fold]]
+[[Category: Kundu S]]
-[[Category: Cyanobacteria]]
+[[Category: Trent III JT]]
-[[Category: Globin]]
-[[Category: Heme]]
-[[Category: Hemoglobin]]
-[[Category: Hexacoordinate]]
-[[Category: Iron]]
-[[Category: Oxygen binding]]
-[[Category: Oxygen storage-transport complex]]
-[[Category: Truncated]]