1y8i

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(New page: 200px<br /> <applet load="1y8i" size="450" color="white" frame="true" align="right" spinBox="true" caption="1y8i, resolution 2.60&Aring;" /> '''Horse methemoglobin...)
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[[Image:1y8i.gif|left|200px]]<br />
 
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<applet load="1y8i" size="450" color="white" frame="true" align="right" spinBox="true"
 
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caption="1y8i, resolution 2.60&Aring;" />
 
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'''Horse methemoglobin low salt, PH 7.0 (98% relative humidity)'''<br />
 
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==Overview==
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==Horse methemoglobin low salt, PH 7.0 (98% relative humidity)==
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A new relaxed state has been characterized in the crystals of horse, methemoglobin grown at neutral pH at low ionic concentration and their low, humidity variants. The crystals provide an example for improvement in, X-ray diffraction quality with reduced solvent content. Only the classical, R state has been so far observed in liganded horse hemoglobin. The state, characterized in the present study lies in between the R state and the R2, state characterized earlier in liganded human hemoglobin. The results, presented here, along with those of earlier studies, suggest that relaxed, and tense hemoglobin can access ensembles of states.
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<StructureSection load='1y8i' size='340' side='right'caption='[[1y8i]], [[Resolution|resolution]] 2.60&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1y8i]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Equus_caballus Equus caballus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1Y8I OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1Y8I 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]] 2.6&#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=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</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=1y8i FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1y8i OCA], [https://pdbe.org/1y8i PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1y8i RCSB], [https://www.ebi.ac.uk/pdbsum/1y8i PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1y8i ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/HBA_HORSE HBA_HORSE] Involved in oxygen transport from the lung to the various peripheral tissues.
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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/y8/1y8i_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=1y8i 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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A new relaxed state has been characterized in the crystals of horse methemoglobin grown at neutral pH at low ionic concentration and their low humidity variants. The crystals provide an example for improvement in X-ray diffraction quality with reduced solvent content. Only the classical R state has been so far observed in liganded horse hemoglobin. The state characterized in the present study lies in between the R state and the R2 state characterized earlier in liganded human hemoglobin. The results presented here, along with those of earlier studies, suggest that relaxed and tense hemoglobin can access ensembles of states.
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==About this Structure==
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A new relaxed state in horse methemoglobin characterized by crystallographic studies.,Sankaranarayanan R, Biswal BK, Vijayan M Proteins. 2005 Aug 15;60(3):547-51. PMID:15887226<ref>PMID:15887226</ref>
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1Y8I is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Equus_caballus Equus caballus] with HEM as [http://en.wikipedia.org/wiki/ligand ligand]. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1Y8I OCA].
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==Reference==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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A new relaxed state in horse methemoglobin characterized by crystallographic studies., Sankaranarayanan R, Biswal BK, Vijayan M, Proteins. 2005 Aug 15;60(3):547-51. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=15887226 15887226]
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</div>
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[[Category: Equus caballus]]
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<div class="pdbe-citations 1y8i" style="background-color:#fffaf0;"></div>
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[[Category: Protein complex]]
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[[Category: Biswal, B.K.]]
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[[Category: Sankaranarayanan, R.]]
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[[Category: Vijayan, M.]]
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[[Category: HEM]]
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[[Category: allosteric transition]]
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[[Category: aquo methemoglobin]]
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[[Category: protein hydration]]
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[[Category: quarternary association]]
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''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Thu Nov 8 13:24:55 2007''
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==See Also==
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*[[Hemoglobin 3D structures|Hemoglobin 3D structures]]
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== References ==
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<references/>
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__TOC__
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</StructureSection>
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[[Category: Equus caballus]]
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[[Category: Large Structures]]
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[[Category: Biswal BK]]
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[[Category: Sankaranarayanan R]]
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[[Category: Vijayan M]]

Current revision

Horse methemoglobin low salt, PH 7.0 (98% relative humidity)

PDB ID 1y8i

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