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2fw0

From Proteopedia

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Apo Open Form of Glucose/Galactose Binding Protein

Structural highlights

2fw0 is a 1 chain structure with sequence from Escherichia coli. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 1.55Å
Ligands:	, , ,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

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).^[1] ^[2] ^[3] ^[4] ^[5]

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

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.

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:17473016^[6]

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

References

↑ Vyas NK, Vyas MN, Quiocho FA. Sugar and signal-transducer binding sites of the Escherichia coli galactose chemoreceptor protein. Science. 1988 Dec 2;242(4883):1290-5. PMID:3057628
↑ Hazelbauer GL, Adler J. Role of the galactose binding protein in chemotaxis of Escherichia coli toward galactose. Nat New Biol. 1971 Mar 24;230(12):101-4. PMID:4927373 doi:10.1038/newbio230101a0
↑ Harayama S, Bollinger J, Iino T, Hazelbauer GL. Characterization of the mgl operon of Escherichia coli by transposon mutagenesis and molecular cloning. J Bacteriol. 1983 Jan;153(1):408-15. PMID:6294056 doi:10.1128/jb.153.1.408-415.1983
↑ Hogg RW, Voelker C, Von Carlowitz I. Nucleotide sequence and analysis of the mgl operon of Escherichia coli K12. Mol Gen Genet. 1991 Oct;229(3):453-9. PMID:1719366 doi:10.1007/BF00267469
↑ Harayama S, Bollinger J, Iino T, Hazelbauer GL. Characterization of the mgl operon of Escherichia coli by transposon mutagenesis and molecular cloning. J Bacteriol. 1983 Jan;153(1):408-15. PMID:6294056 doi:10.1128/jb.153.1.408-415.1983
↑ Borrok MJ, Kiessling LL, Forest KT. Conformational changes of glucose/galactose-binding protein illuminated by open, unliganded, and ultra-high-resolution ligand-bound structures. Protein Sci. 2007 Jun;16(6):1032-41. Epub 2007 May 1. PMID:17473016 doi:http://dx.doi.org/10.1110/ps.062707807

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2fw0"

Categories: Escherichia coli | Large Structures | Borrok MJ | Forest KT | Kiessling LL

@@ Line 1: / Line 1: @@
 ==Apo Open Form of Glucose/Galactose Binding Protein==
-<StructureSection load='2fw0' size='340' side='right' caption='[[2fw0]], [[Resolution|resolution]] 1.55&Aring;' scene=''>
+<StructureSection load='2fw0' size='340' side='right'caption='[[2fw0]], [[Resolution|resolution]] 1.55&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[2fw0]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_coli"_migula_1895 "bacillus coli" migula 1895]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2FW0 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2FW0 FirstGlance]. <br>
+<table><tr><td colspan='2'>[[2fw0]] 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=2FW0 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2FW0 FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=CIT:CITRIC+ACID'>CIT</scene>, <scene name='pdbligand=MLA:MALONIC+ACID'>MLA</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</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]] 1.55&#8491;</td></tr>
-<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2gbp|2gbp]], [[1gcg|1gcg]], [[1glg|1glg]]</td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=CIT:CITRIC+ACID'>CIT</scene>, <scene name='pdbligand=MLA:MALONIC+ACID'>MLA</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene></td></tr>
-<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">mglB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 "Bacillus coli" Migula 1895])</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=2fw0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2fw0 OCA], [https://pdbe.org/2fw0 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2fw0 RCSB], [https://www.ebi.ac.uk/pdbsum/2fw0 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2fw0 ProSAT]</span></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=2fw0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2fw0 OCA], [http://pdbe.org/2fw0 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2fw0 RCSB], [http://www.ebi.ac.uk/pdbsum/2fw0 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2fw0 ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[http://www.uniprot.org/uniprot/DGAL_ECOLI DGAL_ECOLI]] This protein is involved in the active transport of galactose and glucose. It plays a role in the chemotaxis towards the two sugars by interacting with the trg chemoreceptor.
+[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 ==
 [[Image:Consurf_key_small.gif|200px|right]]
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/fw/2fw0_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/fw/2fw0_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
@@ Line 34: / Line 33: @@
 __TOC__
 </StructureSection>
-[[Category: Bacillus coli migula 1895]]
+[[Category: Escherichia coli]]
-[[Category: Borrok, M J]]
+[[Category: Large Structures]]
-[[Category: Forest, K T]]
+[[Category: Borrok MJ]]
-[[Category: Kiessling, L L]]
+[[Category: Forest KT]]
-[[Category: Chemotaxis]]
+[[Category: Kiessling LL]]
-[[Category: Ggbp]]
-[[Category: Hinge]]
-[[Category: Periplasmic binding protein]]
-[[Category: Transport]]
-[[Category: Transport protein]]

2fw0

From Proteopedia

Current revision

Apo Open Form of Glucose/Galactose Binding Protein

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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