1y51

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[[Image:1y51.gif|left|200px]]
 
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{{Structure
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==X-ray crystal structure of Bacillus stearothermophilus Histidine phosphocarrier protein (Hpr) F29W mutant==
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|PDB= 1y51 |SIZE=350|CAPTION= <scene name='initialview01'>1y51</scene>, resolution 1.65&Aring;
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<StructureSection load='1y51' size='340' side='right'caption='[[1y51]], [[Resolution|resolution]] 1.65&Aring;' scene=''>
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|SITE=
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== Structural highlights ==
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|LIGAND= <scene name='pdbligand=SO4:SULFATE ION'>SO4</scene>
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<table><tr><td colspan='2'>[[1y51]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Geobacillus_stearothermophilus Geobacillus stearothermophilus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1Y51 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1Y51 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]] 1.65&#8491;</td></tr>
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|GENE= ptsH ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1422 Geobacillus stearothermophilus])
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
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}}
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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=1y51 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1y51 OCA], [https://pdbe.org/1y51 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1y51 RCSB], [https://www.ebi.ac.uk/pdbsum/1y51 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1y51 ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/PTHP_GEOSE PTHP_GEOSE] General (non sugar-specific) component of the phosphoenolpyruvate-dependent sugar phosphotransferase system (sugar PTS). This major carbohydrate active-transport system catalyzes the phosphorylation of incoming sugar substrates concomitantly with their translocation across the cell membrane. The phosphoryl group from phosphoenolpyruvate (PEP) is transferred to the phosphoryl carrier protein HPr by enzyme I. Phospho-HPr then transfers it to the permease (enzymes II/III). P-Ser-HPr interacts with the catabolite control protein A (CcpA), forming a complex that binds to DNA at the catabolite response elements cre, operator sites preceding a large number of catabolite-regulated genes. Thus, P-Ser-HPr is a corepressor in carbon catabolite repression (CCR), a mechanism that allows bacteria to coordinate and optimize the utilization of available carbon sources. P-Ser-HPr also plays a role in inducer exclusion, in which it probably interacts with several non-PTS permeases and inhibits their transport activity (By similarity).
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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/y5/1y51_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=1y51 ConSurf].
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<div style="clear:both"></div>
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'''X-ray crystal structure of Bacillus stearothermophilus Histidine phosphocarrier protein (Hpr) F29W mutant'''
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==See Also==
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*[[Phosphocarrier protein HPr 3D structures|Phosphocarrier protein HPr 3D structures]]
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__TOC__
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==Overview==
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</StructureSection>
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The study of proteins from extremophilic organisms continues to generate interest in the field of protein folding because paradigms explaining the enhanced stability of these proteins still elude us and such studies have the potential to further our knowledge of the forces stabilizing proteins. We have undertaken such a study with our model protein HPr from a mesophile, Bacillus subtilis, and a thermophile, Bacillus stearothermophilus. We report here the high-resolution structures of the wild-type HPr protein from the thermophile and a variant, F29W. The variant proved to crystallize in two forms: a monomeric form with a structure very similar to the wild-type protein as well as a domain-swapped dimer. Interestingly, the structure of the domain-swapped dimer for HPr is very different from that observed for a homologous protein, Crh, from B.subtilis. The existence of a domain-swapped dimer has implications for amyloid formation and is consistent with recent results showing that the HPr proteins can form amyloid fibrils. We also characterized the conformational stability of the thermophilic HPr proteins using thermal and solvent denaturation methods and have used the high-resolution structures in an attempt to explain the differences in stability between the different HPr proteins. Finally, we present a detailed analysis of the solution properties of the HPr proteins using a variety of biochemical and biophysical methods.
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==About this Structure==
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1Y51 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Geobacillus_stearothermophilus Geobacillus stearothermophilus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1Y51 OCA].
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==Reference==
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The HPr proteins from the thermophile Bacillus stearothermophilus can form domain-swapped dimers., Sridharan S, Razvi A, Scholtz JM, Sacchettini JC, J Mol Biol. 2005 Feb 25;346(3):919-31. Epub 2004 Dec 23. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15713472 15713472]
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[[Category: Geobacillus stearothermophilus]]
[[Category: Geobacillus stearothermophilus]]
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[[Category: Single protein]]
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[[Category: Large Structures]]
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[[Category: Razvi, A.]]
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[[Category: Razvi A]]
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[[Category: Sacchettini, J C.]]
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[[Category: Sacchettini JC]]
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[[Category: Scholtz, J M.]]
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[[Category: Scholtz JM]]
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[[Category: Sridharan, S.]]
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[[Category: Sridharan S]]
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[[Category: SO4]]
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[[Category: bacillus stearothermophilus hpr f29w mutant]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 15:18:34 2008''
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Current revision

X-ray crystal structure of Bacillus stearothermophilus Histidine phosphocarrier protein (Hpr) F29W mutant

PDB ID 1y51

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