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6ra6

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Ferric murine neuroglobin Gly-loop44-47/F106A mutant

Structural highlights

6ra6 is a 1 chain structure with sequence from Mus musculus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 2.3Å
Ligands:	, , , ,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

NGB_MOUSE Involved in oxygen transport in the brain. Hexacoordinate globin, displaying competitive binding of oxygen or the distal His residue to the iron atom. Not capable of penetrating cell membranes. The deoxygenated form exhibits nitrite reductase activity inhibiting cellular respiration via NO-binding to cytochrome c oxidase. Involved in neuroprotection during oxidative stress. May exert its anti-apoptotic activity by acting to reset the trigger level of mitochondrial cytochrome c release necessary to commit the cells to apoptosis.^[1] ^[2]

Publication Abstract from PubMed

Different murine neuroglobin variants showing structural and dynamic alterations that are associated with perturbation of ligand binding have been studied: the CD loop mutants characterized by an enhanced flexibility (Gly-loop(40-48) and Gly-loop(44-47) ), the F106A mutant, and the double Gly-loop(44-47) /F106A mutant. Their ferric resonance Raman spectra in solution and in crystals are almost identical. In the high-frequency region, the identification of a double set of core size marker bands indicates the presence of two 6-coordinate low spin species. The resonance Raman data, together with the corresponding crystal structures, indicate the presence of two neuroglobin conformers with a reversed (A conformer) or a canonical (B conformer) heme insertion orientation. With the identification of the marker bands corresponding to each conformer, the data indicate that the B conformer increases at the expense of the A form, predominantly in the Gly-loop(44-47) /F106A double mutant, as confirmed by X-ray crystallography. This is the first time that a reversed heme insertion has been identified by resonance Raman in a native 6-coordinate low-spin heme protein. This diagnostic tool could be extended to other heme proteins in order to detect heme orientational disorder, which are likely to be correlated to functionally relevant heme dynamics. DATABASE: Crystallographic structure: structural data are deposited in the Protein Data Bank under the 6RA6 PDB entry.

Lack of orientation selectivity of the heme insertion in murine neuroglobin revealed by resonance Raman spectroscopy.,Milazzo L, Exertier C, Becucci M, Freda I, Montemiglio LC, Savino C, Vallone B, Smulevich G FEBS J. 2020 Feb 8. doi: 10.1111/febs.15241. PMID:32034988^[3]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Couture M, Burmester T, Hankeln T, Rousseau DL. The heme environment of mouse neuroglobin. Evidence for the presence of two conformations of the heme pocket. J Biol Chem. 2001 Sep 28;276(39):36377-82. Epub 2001 Jul 25. PMID:11473111 doi:http://dx.doi.org/10.1074/jbc.M103907200
↑ Dewilde S, Kiger L, Burmester T, Hankeln T, Baudin-Creuza V, Aerts T, Marden MC, Caubergs R, Moens L. Biochemical characterization and ligand binding properties of neuroglobin, a novel member of the globin family. J Biol Chem. 2001 Oct 19;276(42):38949-55. Epub 2001 Jul 25. PMID:11473128 doi:http://dx.doi.org/10.1074/jbc.M106438200
↑ Milazzo L, Exertier C, Becucci M, Freda I, Montemiglio LC, Savino C, Vallone B, Smulevich G. Lack of orientation selectivity of the heme insertion in murine neuroglobin revealed by resonance Raman spectroscopy. FEBS J. 2020 Feb 8. doi: 10.1111/febs.15241. PMID:32034988 doi:http://dx.doi.org/10.1111/febs.15241

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 See Also
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/6ra6"

@@ Line 3: / Line 3: @@
 <StructureSection load='6ra6' size='340' side='right'caption='[[6ra6]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[6ra6]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6RA6 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6RA6 FirstGlance]. <br>
+<table><tr><td colspan='2'>[[6ra6]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6RA6 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6RA6 FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=TRS:2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL'>TRS</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]] 2.3&#8491;</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=6ra6 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6ra6 OCA], [http://pdbe.org/6ra6 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6ra6 RCSB], [http://www.ebi.ac.uk/pdbsum/6ra6 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6ra6 ProSAT]</span></td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=TRS:2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL'>TRS</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=6ra6 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6ra6 OCA], [https://pdbe.org/6ra6 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6ra6 RCSB], [https://www.ebi.ac.uk/pdbsum/6ra6 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6ra6 ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[http://www.uniprot.org/uniprot/NGB_MOUSE NGB_MOUSE]] Involved in oxygen transport in the brain. Hexacoordinate globin, displaying competitive binding of oxygen or the distal His residue to the iron atom. Not capable of penetrating cell membranes. The deoxygenated form exhibits nitrite reductase activity inhibiting cellular respiration via NO-binding to cytochrome c oxidase. Involved in neuroprotection during oxidative stress. May exert its anti-apoptotic activity by acting to reset the trigger level of mitochondrial cytochrome c release necessary to commit the cells to apoptosis.<ref>PMID:11473111</ref> <ref>PMID:11473128</ref>
+[https://www.uniprot.org/uniprot/NGB_MOUSE NGB_MOUSE] Involved in oxygen transport in the brain. Hexacoordinate globin, displaying competitive binding of oxygen or the distal His residue to the iron atom. Not capable of penetrating cell membranes. The deoxygenated form exhibits nitrite reductase activity inhibiting cellular respiration via NO-binding to cytochrome c oxidase. Involved in neuroprotection during oxidative stress. May exert its anti-apoptotic activity by acting to reset the trigger level of mitochondrial cytochrome c release necessary to commit the cells to apoptosis.<ref>PMID:11473111</ref> <ref>PMID:11473128</ref>
 <div style="background-color:#fffaf0;">
 == Publication Abstract from PubMed ==
@@ Line 18: / Line 19: @@
 </div>
 <div class="pdbe-citations 6ra6" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[Neuroglobin|Neuroglobin]]
 == References ==
 <references/>
@@ Line 23: / Line 27: @@
 </StructureSection>
 [[Category: Large Structures]]
-[[Category: Exertier, C]]
+[[Category: Mus musculus]]
-[[Category: Freda, I]]
+[[Category: Exertier C]]
-[[Category: Montemiglio, L C]]
+[[Category: Freda I]]
-[[Category: Savino, C]]
+[[Category: Montemiglio LC]]
-[[Category: Vallone, B]]
+[[Category: Savino C]]
-[[Category: Gas binding]]
+[[Category: Vallone B]]
-[[Category: Globin]]
-[[Category: Heme protein]]
-[[Category: Oxygen binding]]

6ra6

From Proteopedia

Current revision

Ferric murine neuroglobin Gly-loop44-47/F106A mutant

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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