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[[Image:1swm.gif|left|200px]]
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{{STRUCTURE_1swm|  PDB=1swm  |  SCENE=  }}
'''X-RAY CRYSTAL STRUCTURE OF THE FERRIC SPERM WHALE MYOGLOBIN: IMIDAZOLE COMPLEX AT 2.0 ANGSTROMS RESOLUTION'''


==X-RAY CRYSTAL STRUCTURE OF THE FERRIC SPERM WHALE MYOGLOBIN: IMIDAZOLE COMPLEX AT 2.0 ANGSTROMS RESOLUTION==
<StructureSection load='1swm' size='340' side='right'caption='[[1swm]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1swm]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Physeter_catodon Physeter catodon]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1SWM OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1SWM 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]] 1.8&#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=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</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=1swm FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1swm OCA], [https://pdbe.org/1swm PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1swm RCSB], [https://www.ebi.ac.uk/pdbsum/1swm PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1swm ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/MYG_PHYMC MYG_PHYMC] Serves as a reserve supply of oxygen and facilitates the movement of oxygen within muscles.
== 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/sw/1swm_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=1swm ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The X-ray crystal structure of the ferric sperm whale (Physeter catodon) myoglobin:imidazole complex has been refined at 2.0 A resolution, to a final R-factor of 14.8%. The overall conformation of the protein is little affected by binding of the ligand. Imidazole is co-ordinated to the heme iron at the distal site, and forces distinguishable local changes in the surrounding protein residues. His64(E7) swings out of the distal pocket and becomes substantially exposed to the solvent: nevertheless, it stabilizes the exogenous ligand by hydrogen bonding. The side-chains of residues Arg45(CD3) and Asp60(E3) are also affected by imidazole association.


==Overview==
X-ray crystal structure of the ferric sperm whale myoglobin: imidazole complex at 2.0 A resolution.,Lionetti C, Guanziroli MG, Frigerio F, Ascenzi P, Bolognesi M J Mol Biol. 1991 Feb 5;217(3):409-12. PMID:1994031<ref>PMID:1994031</ref>
The X-ray crystal structure of the ferric sperm whale (Physeter catodon) myoglobin:imidazole complex has been refined at 2.0 A resolution, to a final R-factor of 14.8%. The overall conformation of the protein is little affected by binding of the ligand. Imidazole is co-ordinated to the heme iron at the distal site, and forces distinguishable local changes in the surrounding protein residues. His64(E7) swings out of the distal pocket and becomes substantially exposed to the solvent: nevertheless, it stabilizes the exogenous ligand by hydrogen bonding. The side-chains of residues Arg45(CD3) and Asp60(E3) are also affected by imidazole association.


==About this Structure==
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
1SWM is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Physeter_catodon Physeter catodon]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1SWM OCA].
</div>
<div class="pdbe-citations 1swm" style="background-color:#fffaf0;"></div>


==Reference==
==See Also==
X-ray crystal structure of the ferric sperm whale myoglobin: imidazole complex at 2.0 A resolution., Lionetti C, Guanziroli MG, Frigerio F, Ascenzi P, Bolognesi M, J Mol Biol. 1991 Feb 5;217(3):409-12. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/1994031 1994031]
*[[Myoglobin 3D structures|Myoglobin 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Physeter catodon]]
[[Category: Physeter catodon]]
[[Category: Single protein]]
[[Category: Ascenzi P]]
[[Category: Ascenzi, P.]]
[[Category: Bolognesi M]]
[[Category: Bolognesi, M.]]
[[Category: Brunori M]]
[[Category: Brunori, M.]]
[[Category: Coda A]]
[[Category: Coda, A.]]
[[Category: Rizzi M]]
[[Category: Rizzi, M.]]
[[Category: Oxygen transport]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May  3 09:13:21 2008''

Latest revision as of 07:11, 13 August 2026

X-RAY CRYSTAL STRUCTURE OF THE FERRIC SPERM WHALE MYOGLOBIN: IMIDAZOLE COMPLEX AT 2.0 ANGSTROMS RESOLUTION

1swm, resolution 1.80Å

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