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[[Image:2fvy.jpg|left|200px]]


{{Structure
==High Resolution Glucose Bound Crystal Structure of GGBP==
|PDB= 2fvy |SIZE=350|CAPTION= <scene name='initialview01'>2fvy</scene>, resolution 0.92&Aring;
<StructureSection load='2fvy' size='340' side='right'caption='[[2fvy]], [[Resolution|resolution]] 0.92&Aring;' scene=''>
|SITE=  
== Structural highlights ==
|LIGAND= <scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=CO2:CARBON+DIOXIDE'>CO2</scene>, <scene name='pdbligand=GLC:GLUCOSE'>GLC</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>
<table><tr><td colspan='2'>[[2fvy]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2FVY OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2FVY FirstGlance]. <br>
|ACTIVITY=  
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 0.92&#8491;</td></tr>
|GENE= mglB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 Escherichia coli])
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=BGC:BETA-D-GLUCOSE'>BGC</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=CO2:CARBON+DIOXIDE'>CO2</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene></td></tr>
|DOMAIN=
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2fvy FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2fvy OCA], [https://pdbe.org/2fvy PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2fvy RCSB], [https://www.ebi.ac.uk/pdbsum/2fvy PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2fvy ProSAT]</span></td></tr>
|RELATEDENTRY=[[2gbp|2GBP]], [[1gcg|1GCG]], [[1glg|1GLG]]
</table>
|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2fvy FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2fvy OCA], [http://www.ebi.ac.uk/pdbsum/2fvy PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2fvy RCSB]</span>
== Function ==
}}
[https://www.uniprot.org/uniprot/MGLB_ECOLI MGLB_ECOLI] Part of the ABC transporter complex MglABC involved in galactose/methyl galactoside import (Probable). In addition, binds D-galactose and D-glucose and plays a role in the chemotaxis towards these two sugars by interacting with the Trg chemoreceptor (PubMed:3057628, PubMed:4927373). Chemotaxis requires MglB, but not MglA or MglC (PubMed:6294056).<ref>PMID:3057628</ref> <ref>PMID:4927373</ref> <ref>PMID:6294056</ref> <ref>PMID:1719366</ref> <ref>PMID:6294056</ref>
 
== Evolutionary Conservation ==
'''High Resolution Glucose Bound Crystal Structure of GGBP'''
[[Image:Consurf_key_small.gif|200px|right]]
 
Check<jmol>
 
  <jmolCheckbox>
==Overview==
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/fv/2fvy_consurf.spt"</scriptWhenChecked>
D-Glucose/D-Galactose-binding protein (GGBP) mediates chemotaxis toward and active transport of glucose and galactose in a number of bacterial species. GGBP, like other periplasmic binding proteins, can exist in open (ligand-free) and closed (ligand-bound) states. We report a 0.92 angstroms resolution structure of GGBP from Escherichia coli in the glucose-bound state and the first structure of an open, unbound form of GGBP (at 1.55 angstroms resolution). These structures vary in the angle between the two structural domains; the observed difference of 31 degrees arises from torsion angle changes in a three-segment hinge. A comparison with the closely related periplasmic receptors, ribose- and allose-binding proteins, shows that the GGBP hinge residue positions that undergo the largest conformational changes are different. Furthermore, the high-quality data collected for the atomic resolution glucose-bound structure allow for the refinement of specific hydrogen atom positions, the assignment of alternate side chain conformations, the first description of CO(2) trapped after radiation-induced decarboxylation, and insight into the role of the exo-anomeric effect in sugar binding. Together, these structures provide insight into how the hinge-bending movement of GGBP facilitates ligand binding, transport, and signaling.
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
 
    <text>to colour the structure by Evolutionary Conservation</text>
==About this Structure==
  </jmolCheckbox>
2FVY is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2FVY OCA].  
</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=2fvy ConSurf].
 
<div style="clear:both"></div>
==Reference==
== References ==
Conformational changes of glucose/galactose-binding protein illuminated by open, unliganded, and ultra-high-resolution ligand-bound structures., Borrok MJ, Kiessling LL, Forest KT, Protein Sci. 2007 Jun;16(6):1032-41. Epub 2007 May 1. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/17473016 17473016]
<references/>
__TOC__
</StructureSection>
[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
[[Category: Single protein]]
[[Category: Large Structures]]
[[Category: Borrok, M J.]]
[[Category: Borrok MJ]]
[[Category: Forest, K T.]]
[[Category: Forest KT]]
[[Category: Kiessling, L L.]]
[[Category: Kiessling LL]]
[[Category: chemotaxis]]
[[Category: hinge]]
[[Category: periplasmic binding protien]]
[[Category: transport,]]
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 03:08:22 2008''

Latest revision as of 09:25, 14 February 2024

High Resolution Glucose Bound Crystal Structure of GGBP

2fvy, resolution 0.92Å

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