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| ==Structure of the Obg GTP-binding protein== | | ==Structure of the Obg GTP-binding protein== |
| <StructureSection load='1lnz' size='340' side='right'caption='[[1lnz]], [[Resolution|resolution]] 2.60Å' scene=''> | | <StructureSection load='1lnz' size='340' side='right'caption='[[1lnz]]' scene=''> |
| == Structural highlights == | | == Structural highlights == |
| <table><tr><td colspan='2'>[[1lnz]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/"vibrio_subtilis"_ehrenberg_1835 "vibrio subtilis" ehrenberg 1835]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1LNZ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1LNZ FirstGlance]. <br> | | <table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1LNZ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1LNZ FirstGlance]. <br> |
| </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=G4P:GUANOSINE-5,3-TETRAPHOSPHATE'>G4P</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr> | | </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=1lnz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1lnz OCA], [https://pdbe.org/1lnz PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1lnz RCSB], [https://www.ebi.ac.uk/pdbsum/1lnz PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1lnz ProSAT], [https://www.topsan.org/Proteins/NYSGXRC/1lnz TOPSAN]</span></td></tr> |
| <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></td></tr>
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| <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=1lnz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1lnz OCA], [http://pdbe.org/1lnz PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1lnz RCSB], [http://www.ebi.ac.uk/pdbsum/1lnz PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1lnz ProSAT], [http://www.topsan.org/Proteins/NYSGXRC/1lnz TOPSAN]</span></td></tr> | |
| </table> | | </table> |
| == Function ==
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| [[http://www.uniprot.org/uniprot/OBG_BACSU OBG_BACSU]] Necessary for the transition from vegetative growth to stage 0 or stage II of sporulation, but sporulation subsequent to these stages is unaffected at 45 degrees Celsius. This ts effect is probably due solely to the E-79 mutation. Required for expression of early sporulation genes, further suggesting a role in the induction of sporulation. Depletion effects on sporulation can be partially suppressed by missense mutations in spo0A. Strains depleted for obg stop growing after about 3 hours and do not induce the sigma-B factor following ethanol stress. It cofractionates with the ribosome and upstream stress response regulators RsbR, RsbS and RsbT in size fractionation columns, suggesting the ribosome might serve as a possible mediator of the activity of obg and the stress induction of sigma-B. In glycerol gradients partially associates with ribosomes; this is stabilized by a nonhydrolyzable GTP-analog and to a lesser extent GTP and GDP.<ref>PMID:7768831</ref> <ref>PMID:10419966</ref>
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| == Evolutionary Conservation == | | == Evolutionary Conservation == |
| [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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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=1lnz ConSurf]. | | </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=1lnz ConSurf]. |
| <div style="clear:both"></div> | | <div style="clear:both"></div> |
| <div style="background-color:#fffaf0;">
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| == Publication Abstract from PubMed ==
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| The Obg nucleotide binding protein family has been implicated in stress response, chromosome partitioning, replication initiation, mycelium development, and sporulation. Obg proteins are among a large group of GTP binding proteins conserved from bacteria to man. Members of the family contain two equally and highly conserved domains, a C-terminal GTP binding domain and an N-terminal glycine-rich domain. Structural analysis of Bacillus subtilis Obg revealed respective domain architectures and how they are coupled through the putative switch elements of the C-terminal GTPase domain in apo and nucleotide-bound configurations. Biochemical analysis of bacterial and human Obg proteins combined with the structural observation of the ppGpp nucleotide within the Obg active sight suggest a potential role for ppGpp modulation of Obg function in B. subtilis.
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| Structural and biochemical analysis of the Obg GTP binding protein.,Buglino J, Shen V, Hakimian P, Lima CD Structure. 2002 Nov;10(11):1581-92. PMID:12429099<ref>PMID:12429099</ref>
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| From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
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| </div>
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| <div class="pdbe-citations 1lnz" style="background-color:#fffaf0;"></div>
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| ==See Also== | | ==See Also== |
| *[[GTP-binding protein 3D structures|GTP-binding protein 3D structures]] | | *[[GTP-binding protein 3D structures|GTP-binding protein 3D structures]] |
| == References ==
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| <references/>
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| __TOC__ | | __TOC__ |
| </StructureSection> | | </StructureSection> |
| [[Category: Vibrio subtilis ehrenberg 1835]]
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| [[Category: Large Structures]] | | [[Category: Large Structures]] |
| [[Category: Buglino, J]] | | [[Category: Buglino J]] |
| [[Category: Burley, S K]] | | [[Category: Burley SK]] |
| [[Category: Hakimian, P]] | | [[Category: Hakimian P]] |
| [[Category: Lima, C D]] | | [[Category: Lima CD]] |
| [[Category: Structural genomic]]
| | [[Category: Shen V]] |
| [[Category: Shen, V]] | |
| [[Category: Cell cycle]]
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| [[Category: Gtpase]]
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| [[Category: Large g-protein]]
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| [[Category: NYSGXRC, New York SGX Research Center for Structural Genomics]]
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| [[Category: Obg]]
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| [[Category: PSI, Protein structure initiative]]
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| [[Category: Sporulation]]
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| [[Category: Stress response]]
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| [[Category: Stringent factor]]
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