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| | <StructureSection load='2wtg' size='340' side='right'caption='[[2wtg]], [[Resolution|resolution]] 1.50Å' scene=''> | | <StructureSection load='2wtg' size='340' side='right'caption='[[2wtg]], [[Resolution|resolution]] 1.50Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2wtg]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Caeel Caeel]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2WTG OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=2WTG FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2wtg]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Caenorhabditis_elegans Caenorhabditis elegans]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2WTG OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2WTG FirstGlance]. <br> |
| - | </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=OXY:OXYGEN+MOLECULE'>OXY</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]] 1.5Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2wth|2wth]]</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=OXY:OXYGEN+MOLECULE'>OXY</scene></td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=2wtg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2wtg OCA], [http://pdbe.org/2wtg PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2wtg RCSB], [http://www.ebi.ac.uk/pdbsum/2wtg PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2wtg 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=2wtg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2wtg OCA], [https://pdbe.org/2wtg PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2wtg RCSB], [https://www.ebi.ac.uk/pdbsum/2wtg PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2wtg ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/GLBH_CAEEL GLBH_CAEEL]] May be a globin and may play a role in oxygen transport. | + | [https://www.uniprot.org/uniprot/GLBH_CAEEL GLBH_CAEEL] May be a globin and may play a role in oxygen transport. |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Caeel]] | + | [[Category: Caenorhabditis elegans]] |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Bolognesi, M]] | + | [[Category: Bolognesi M]] |
| - | [[Category: Dewilde, S]] | + | [[Category: De Henau S]] |
| - | [[Category: Doorslaer, S Van]] | + | [[Category: Dewilde S]] |
| - | [[Category: Fago, A]] | + | [[Category: Fago A]] |
| - | [[Category: Geuens, E]] | + | [[Category: Geuens E]] |
| - | [[Category: Henau, S De]]
| + | [[Category: Hoogewijs D]] |
| - | [[Category: Hoogewijs, D]] | + | [[Category: Kiger L]] |
| - | [[Category: Kiger, L]] | + | [[Category: Marden M]] |
| - | [[Category: Marden, M]] | + | [[Category: Moens L]] |
| - | [[Category: Moens, L]] | + | [[Category: Nardini M]] |
| - | [[Category: Nardini, M]] | + | [[Category: Pesce A]] |
| - | [[Category: Pesce, A]] | + | [[Category: Tilleman L]] |
| - | [[Category: Tilleman, L]] | + | [[Category: Van Doorslaer S]] |
| - | [[Category: Vanfleteren, J]] | + | [[Category: Vanfleteren J]] |
| - | [[Category: Vinck, E]] | + | [[Category: Vinck E]] |
| - | [[Category: Weber, R E]] | + | [[Category: Weber RE]] |
| - | [[Category: Metal-binding]] | + | |
| - | [[Category: Oxygen transport]]
| + | |
| Structural highlights
Function
GLBH_CAEEL May be a globin and may play a role in oxygen transport.
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
BACKGROUND: The genome of the nematode Caenorhabditis elegans contains more than 30 putative globin genes that all are transcribed. Although their translated amino acid sequences fit the globin fold, a variety of amino-acid substitutions and extensions generate a wide structural diversity among the putative globins. No information is available on the physicochemical properties and the in vivo expression. RESULTS: We expressed the globins in a bacterial system, characterized the purified proteins by optical and resonance Raman spectroscopy, measured the kinetics and equilibria of O2 binding and determined the crystal structure of GLB-1* (CysGH2 --> Ser mutant). Furthermore, we studied the expression patterns of glb-1 (ZK637.13) and glb-26 (T22C1.2) in the worms using green fluorescent protein technology and measured alterations of their transcript abundances under hypoxic conditions.GLB-1* displays the classical three-over-three alpha-helical sandwich of vertebrate globins, assembled in a homodimer associated through facing E- and F-helices. Within the heme pocket the dioxygen molecule is stabilized by a hydrogen bonded network including TyrB10 and GlnE7.GLB-1 exhibits high ligand affinity, which is, however, lower than in other globins with the same distal TyrB10-GlnE7 amino-acid pair. In the absence of external ligands, the heme ferrous iron of GLB-26 is strongly hexacoordinated with HisE7, which could explain its extremely low affinity for CO. This globin oxidizes instantly to the ferric form in the presence of oxygen and is therefore incapable of reversible oxygen binding. CONCLUSION: The presented data indicate that GLB-1 and GLB-26 belong to two functionally-different globin classes.
Globin-like proteins in Caenorhabditis elegans: in vivo localization, ligand binding and structural properties.,Geuens E, Hoogewijs D, Nardini M, Vinck E, Pesce A, Kiger L, Fago A, Tilleman L, De Henau S, Marden MC, Weber RE, Van Doorslaer S, Vanfleteren J, Moens L, Bolognesi M, Dewilde S BMC Biochem. 2010 Apr 2;11:17. PMID:20361867[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Geuens E, Hoogewijs D, Nardini M, Vinck E, Pesce A, Kiger L, Fago A, Tilleman L, De Henau S, Marden MC, Weber RE, Van Doorslaer S, Vanfleteren J, Moens L, Bolognesi M, Dewilde S. Globin-like proteins in Caenorhabditis elegans: in vivo localization, ligand binding and structural properties. BMC Biochem. 2010 Apr 2;11:17. PMID:20361867 doi:10.1186/1471-2091-11-17
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