|
|
| (One intermediate revision not shown.) |
| Line 3: |
Line 3: |
| | <StructureSection load='2fri' size='340' side='right'caption='[[2fri]], [[Resolution|resolution]] 1.60Å' scene=''> | | <StructureSection load='2fri' size='340' side='right'caption='[[2fri]], [[Resolution|resolution]] 1.60Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2fri]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Equus_caballus Equus caballus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2FRI OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2FRI FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2fri]] is a 1 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=2FRI OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2FRI FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=NO2:NITRITE+ION'>NO2</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</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]] 1.6Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2frf|2frf]], [[2frj|2frj]], [[2frk|2frk]]</td></tr>
| + | <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=NO2:NITRITE+ION'>NO2</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'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2fri FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2fri OCA], [http://pdbe.org/2fri PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2fri RCSB], [http://www.ebi.ac.uk/pdbsum/2fri PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2fri ProSAT]</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=2fri FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2fri OCA], [https://pdbe.org/2fri PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2fri RCSB], [https://www.ebi.ac.uk/pdbsum/2fri PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2fri ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/MYG_HORSE MYG_HORSE]] Serves as a reserve supply of oxygen and facilitates the movement of oxygen within muscles. | + | [https://www.uniprot.org/uniprot/MYG_HORSE MYG_HORSE] Serves as a reserve supply of oxygen and facilitates the movement of oxygen within muscles. |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
| Line 38: |
Line 38: |
| | [[Category: Equus caballus]] | | [[Category: Equus caballus]] |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Copeland, D M]] | + | [[Category: Copeland DM]] |
| - | [[Category: Richter-Addo, G B]] | + | [[Category: Richter-Addo GB]] |
| - | [[Category: Soares, A S]] | + | [[Category: Soares AS]] |
| - | [[Category: West, A H]] | + | [[Category: West AH]] |
| - | [[Category: Heme]]
| + | |
| - | [[Category: Iron]]
| + | |
| - | [[Category: Myoglobin]]
| + | |
| - | [[Category: Nitric oxide]]
| + | |
| - | [[Category: Nitrite]]
| + | |
| - | [[Category: No]]
| + | |
| - | [[Category: No2]]
| + | |
| - | [[Category: Oxygen storage-transport complex]]
| + | |
| Structural highlights
Function
MYG_HORSE Serves as a reserve supply of oxygen and facilitates the movement of oxygen within muscles.
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
Nitrite is an important species in the global nitrogen cycle, and the nitrite reductase enzymes convert nitrite to nitric oxide (NO). Recently, it has been shown that hemoglobin and myoglobin catalyze the reduction of nitrite to NO under hypoxic conditions. We have determined the 1.20 A resolution crystal structure of the nitrite adduct of ferric horse heart myoglobin (hh Mb). The ligand is bound to iron in the nitrito form, and the complex is formulated as MbIII(ONO-). The Fe-ONO bond length is 1.94 A, and the O-N-O angle is 113 degrees . In addition, the nitrite ligand is stabilized by hydrogen bonding with the distal His64 residue. We have also determined the 1.30 A resolution crystal structures of hh MbIINO. When hh MbIINO is prepared from the reaction of metMbIII with nitrite/dithionite, the FeNO angle is 144 degrees with a Fe-NO bond length of 1.87 A. However, when prepared from the reaction of NO with reduced MbII, the FeNO angle is 120 degrees with a Fe-NO bond length of 2.13 A. This difference in FeNO conformations as a function of preparative method is reproducible, and suggests a role of the distal pocket in hh MbIINO in stabilizing local FeNO conformational minima.
Crystal structures of the nitrite and nitric oxide complexes of horse heart myoglobin.,Copeland DM, Soares AS, West AH, Richter-Addo GB J Inorg Biochem. 2006 Aug;100(8):1413-25. Epub 2006 May 5. PMID:16777231[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Copeland DM, Soares AS, West AH, Richter-Addo GB. Crystal structures of the nitrite and nitric oxide complexes of horse heart myoglobin. J Inorg Biochem. 2006 Aug;100(8):1413-25. Epub 2006 May 5. PMID:16777231 doi:10.1016/j.jinorgbio.2006.04.011
|
