2mbw

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[[Image:2mbw.jpg|left|200px]]
 
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{{Structure
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==RECOMBINANT SPERM WHALE MYOGLOBIN (MET)==
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|PDB= 2mbw |SIZE=350|CAPTION= <scene name='initialview01'>2mbw</scene>, resolution 1.5&Aring;
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<StructureSection load='2mbw' size='340' side='right'caption='[[2mbw]], [[Resolution|resolution]] 1.50&Aring;' scene=''>
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|SITE=
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== Structural highlights ==
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|LIGAND= <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>
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<table><tr><td colspan='2'>[[2mbw]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Physeter_catodon Physeter catodon]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=1mbw 1mbw]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2MBW OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2MBW FirstGlance]. <br>
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|ACTIVITY=
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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]] 1.5&#8491;</td></tr>
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|GENE=
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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>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
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|DOMAIN=
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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=2mbw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2mbw OCA], [https://pdbe.org/2mbw PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2mbw RCSB], [https://www.ebi.ac.uk/pdbsum/2mbw PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2mbw ProSAT]</span></td></tr>
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|RELATEDENTRY=
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</table>
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2mbw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2mbw OCA], [http://www.ebi.ac.uk/pdbsum/2mbw PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2mbw RCSB]</span>
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== Function ==
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}}
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[https://www.uniprot.org/uniprot/MYG_PHYMC MYG_PHYMC] Serves as a reserve supply of oxygen and facilitates the movement of oxygen within muscles.
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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/mb/2mbw_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=2mbw ConSurf].
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<div style="clear:both"></div>
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'''RECOMBINANT SPERM WHALE MYOGLOBIN (MET)'''
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==See Also==
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*[[Myoglobin 3D structures|Myoglobin 3D structures]]
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__TOC__
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==Overview==
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</StructureSection>
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The structures of the deoxy, oxy, and aquomet forms of native sperm whale myoglobin reconstituted with cobalt protoporphyrin IX have been determined by x-ray crystallography. As expected, cobalt myoglobin closely resembles native iron myoglobin in overall structure, especially in their respective aquomet forms. In the cobalt oxymyoglobin structure, the Nepsilon of distal histidine 64 lies within hydrogen bonding distance to both the oxygen atom directly bonded to the cobalt and the terminal oxygen atom, in agreement with previous EPR and resonance Raman studies. The metal atom in cobaltous myoglobin does show a small 0.06-A out-of-porphyrin plane displacement when moving from the oxy to deoxy state. In the case of the native iron-containing myoglobin, the oxy to deoxy transition results in a larger 0.16-A displacement of the metal farther out of the porphyrin plane, attributed to an increase in spin from S = 0 to S = 2. The small displacement in cobalt myoglobin is due to a change in coordination geometry, not spin state (S = 1/2 for both cobalt deoxy- and oxymyoglobin). The small out-of-porphyrin plane movement of cobalt which accompanies deoxygenation of myoglobin also occurs in cobalt hemoglobin and serves to explain why cooperativity, although reduced, is still preserved when iron is replaced by cobalt in human hemoglobin.
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[[Category: Large Structures]]
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==About this Structure==
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2MBW is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Physeter_catodon Physeter catodon]. This structure supersedes the now removed PDB entry 1MBW. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2MBW OCA].
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==Reference==
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High resolution crystal structures of the deoxy, oxy, and aquomet forms of cobalt myoglobin., Brucker EA, Olson JS, Phillips GN Jr, Dou Y, Ikeda-Saito M, J Biol Chem. 1996 Oct 11;271(41):25419-22. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/8810310 8810310]
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[[Category: Physeter catodon]]
[[Category: Physeter catodon]]
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[[Category: Single protein]]
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[[Category: Brucker EA]]
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[[Category: Brucker, E A.]]
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[[Category: Phillips Jr GN]]
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[[Category: Jr., G N.Phillips.]]
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[[Category: heme]]
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[[Category: oxygen transport]]
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[[Category: respiratory protein]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 04:03:47 2008''
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Current revision

RECOMBINANT SPERM WHALE MYOGLOBIN (MET)

PDB ID 2mbw

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